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National Diet

Updated: Wikipedia source

National Diet

The National Diet (国会, Kokkai; Japanese pronunciation: [kok̚.kai]) is the national legislature of Japan. It is composed of a lower house, called the House of Representatives (衆議院, Shūgiin), and an upper house, the House of Councillors (参議院, Sangiin). Both houses are directly elected under a parallel voting system. In addition to passing laws, the Diet is formally responsible for nominating the prime minister. The Diet was first established as the Imperial Diet in 1890 under the Meiji Constitution, and took its current form in 1947 upon the adoption of the post-war constitution. Both houses meet in the National Diet Building (国会議事堂, Kokkai-gijidō) in Nagatachō, Chiyoda, Tokyo.

Infobox

Type
Bicameral
Houses
mw- House of Councillors(upper house)House of Representatives(lower house)
Founded
29 November 1890(135 years, 12 days)
President of the House of Councillors
Masakazu Sekiguchi, LDP since 11 November 2024
Speaker of the House of Representatives
Fukushiro Nukaga, LDP since 11 November 2024
Prime Minister
Sanae Takaichi, LDP since 21 October 2025
Seats
713248 (House of Councillors)465 (House of Representatives)
House of Councillors political groups
Government (100) LDP (100) Supported by (19) Ishin (19) Opposition (120) CDP-SDP (42)[a] DPFP (25)[b] Kōmeitō (21) Sanseitō (15) JCP (7) Reiwa (6) CPJ (2) Okinawa Whirlwind (2) Unaffiliated (9) LDP (1/Speaker) CDP (1/Vice Speaker) Independent (7)[c]
House of Representatives political groups
Government (196) LDP (196)[d] Supported by (35) Ishin (35) Opposition (229) CDP (148)[e] DPFP (27) Kōmeitō (24) Reiwa (9) JCP (8) Yūshi no Kai (4) Kaikaku no Kai (3) Sanseitō (3) Genzei Hosyu Kodomo (3)[f] Unaffiliated (5) LDP (1/Speaker) CDP (1/Vice Speaker) Independent (3)[g]
House of Councillors voting system
Parallel voting:Single non-transferable vote (147 seats)Party-list proportional representation (98 seats)Staggered elections
House of Representatives voting system
Parallel voting:First-past-the-post voting (289 seats)Party-list proportional representation (176 seats)
Last House of Councillors election
20 July 2025
Last House of Representatives election
27 October 2024
Next House of Councillors election
2028
Next House of Representatives election
No later than 22 October 2028

Tables

List of National Diet sessions[36] · List of sessions
1st
1st
Diet
1st
Type
S
Opened
May 20, 1947
Closed
December 9, 1947
Length in days(originally scheduled+extension[s])
204 (50+154)
2nd
2nd
Diet
2nd
Type
R
Opened
December 10, 1947
Closed
July 5, 1948
Length in days(originally scheduled+extension[s])
209 (150+59)
3rd
3rd
Diet
3rd
Type
E
Opened
October 11, 1948
Closed
November 30, 1948
Length in days(originally scheduled+extension[s])
51 (30+21)
4th
4th
Diet
4th
Type
R
Opened
December 1, 1948
Closed
December 23, 1948(dissolution)
Length in days(originally scheduled+extension[s])
23 (150)
5th
5th
Diet
5th
Type
S
Opened
February 11, 1949
Closed
May 31, 1949
Length in days(originally scheduled+extension[s])
110 (70+40)
6th
6th
Diet
6th
Type
E
Opened
October 25, 1949
Closed
December 3, 1949
Length in days(originally scheduled+extension[s])
40 (30+10)
7th
7th
Diet
7th
Type
R
Opened
December 4, 1949
Closed
May 2, 1950
Length in days(originally scheduled+extension[s])
150
8th
8th
Diet
8th
Type
E
Opened
July 21, 1950
Closed
July 31, 1950
Length in days(originally scheduled+extension[s])
20
9th
9th
Diet
9th
Type
E
Opened
November 21, 1950
Closed
December 9, 1950
Length in days(originally scheduled+extension[s])
19 (18+1)
10th
10th
Diet
10th
Type
R
Opened
December 10, 1950
Closed
June 5, 1951
Length in days(originally scheduled+extension[s])
178 (150+28)
11th
11th
Diet
11th
Type
E
Opened
August 16, 1951
Closed
August 18, 1951
Length in days(originally scheduled+extension[s])
3
12th
12th
Diet
12th
Type
E
Opened
October 10, 1951
Closed
November 30, 1951
Length in days(originally scheduled+extension[s])
52 (40+12)
13th
13th
Diet
13th
Type
R
Opened
December 10, 1951
Closed
July 31, 1952
Length in days(originally scheduled+extension[s])
225 (150+85)
14th (ja)
14th (ja)
Diet
14th (ja)
Type
R
Opened
August 26, 1952
Closed
August 28, 1952(dissolution)
Length in days(originally scheduled+extension[s])
3 (150)
–
–
Diet
–
Type
[HCES]
Opened
August 31, 1952
Closed
August 31, 1952
15th (ja)
15th (ja)
Diet
15th (ja)
Type
S
Opened
October 24, 1952
Closed
March 14, 1953(dissolution)
Length in days(originally scheduled+extension[s])
142 (60+99)
–
–
Diet
–
Type
[HCES]
Opened
March 18, 1953
Closed
March 20, 1953
16th
16th
Diet
16th
Type
S
Opened
May 18, 1953
Closed
August 10, 1953
Length in days(originally scheduled+extension[s])
85 (75+10)
17th
17th
Diet
17th
Type
E
Opened
October 29, 1953
Closed
November 7, 1953
Length in days(originally scheduled+extension[s])
10 (7+3)
18th
18th
Diet
18th
Type
E
Opened
November 30, 1953
Closed
December 8, 1953
Length in days(originally scheduled+extension[s])
9
19th
19th
Diet
19th
Type
R
Opened
December 10, 1953
Closed
June 15, 1957
Length in days(originally scheduled+extension[s])
188 (150+38)
20th
20th
Diet
20th
Type
E
Opened
November 30, 1954
Closed
December 9, 1954
Length in days(originally scheduled+extension[s])
10 (9+1)
21st
21st
Diet
21st
Type
R
Opened
December 10, 1954
Closed
January 24, 1955(dissolution)
Length in days(originally scheduled+extension[s])
46 (150)
22nd
22nd
Diet
22nd
Type
S
Opened
March 18, 1955
Closed
July 30, 1955
Length in days(originally scheduled+extension[s])
135 (105+30)
23rd
23rd
Diet
23rd
Type
E
Opened
November 22, 1955
Closed
December 16, 1955
Length in days(originally scheduled+extension[s])
25
24th
24th
Diet
24th
Type
R
Opened
December 20, 1955
Closed
June 3, 1956
Length in days(originally scheduled+extension[s])
167 (150+17)
25th
25th
Diet
25th
Type
E
Opened
November 12, 1956
Closed
December 13, 1956
Length in days(originally scheduled+extension[s])
32 (25+7)
26th
26th
Diet
26th
Type
R
Opened
December 20, 1956
Closed
May 19, 1957
Length in days(originally scheduled+extension[s])
151 (150+1)
27th
27th
Diet
27th
Type
E
Opened
November 1, 1957
Closed
November 14, 1957
Length in days(originally scheduled+extension[s])
14 (12+2)
28th
28th
Diet
28th
Type
R
Opened
December 20, 1957
Closed
April 25, 1958(dissolution)
Length in days(originally scheduled+extension[s])
127 (150)
29th
29th
Diet
29th
Type
S
Opened
June 10, 1958
Closed
July 8, 1958
Length in days(originally scheduled+extension[s])
29 (25+4)
30th
30th
Diet
30th
Type
E
Opened
September 29, 1958
Closed
December 7, 1958
Length in days(originally scheduled+extension[s])
70 (40+30)
31st
31st
Diet
31st
Type
R
Opened
December 10, 1958
Closed
May 2, 1959
Length in days(originally scheduled+extension[s])
144
32nd
32nd
Diet
32nd
Type
E
Opened
June 22, 1959
Closed
July 3, 1959
Length in days(originally scheduled+extension[s])
12
33rd
33rd
Diet
33rd
Type
E
Opened
October 26, 1959
Closed
December 27, 1959
Length in days(originally scheduled+extension[s])
63 (60+13)
34th
34th
Diet
34th
Type
R
Opened
December 29, 1959
Closed
July 15, 1960
Length in days(originally scheduled+extension[s])
200 (150+50)
35th
35th
Diet
35th
Type
E
Opened
July 18, 1960
Closed
July 22, 1960
Length in days(originally scheduled+extension[s])
5
36th
36th
Diet
36th
Type
E
Opened
October 17, 1960
Closed
October 24, 1960(dissolution)
Length in days(originally scheduled+extension[s])
8 (10)
37th
37th
Diet
37th
Type
S
Opened
December 5, 1960
Closed
December 22, 1960
Length in days(originally scheduled+extension[s])
18
38th
38th
Diet
38th
Type
R
Opened
December 26, 1960
Closed
June 8, 1961
Length in days(originally scheduled+extension[s])
165 (150+15)
39th
39th
Diet
39th
Type
E
Opened
September 25, 1961
Closed
October 31, 1961
Length in days(originally scheduled+extension[s])
37
40th
40th
Diet
40th
Type
R
Opened
December 9, 1961
Closed
May 7, 1962
Length in days(originally scheduled+extension[s])
150
41st
41st
Diet
41st
Type
E
Opened
August 4, 1962
Closed
September 2, 1962
Length in days(originally scheduled+extension[s])
30
42nd
42nd
Diet
42nd
Type
E
Opened
December 8, 1962
Closed
December 23, 1962
Length in days(originally scheduled+extension[s])
16 (12+4)
43rd
43rd
Diet
43rd
Type
R
Opened
December 24, 1962
Closed
July 6, 1963
Length in days(originally scheduled+extension[s])
195 (150+45)
44th
44th
Diet
44th
Type
E
Opened
October 15, 1963
Closed
October 23, 1963(dissolution)
Length in days(originally scheduled+extension[s])
9 (30)
45th
45th
Diet
45th
Type
S
Opened
December 4, 1963
Closed
December 18, 1963
Length in days(originally scheduled+extension[s])
15
46th
46th
Diet
46th
Type
R
Opened
December 20, 1963
Closed
June 26, 1964
Length in days(originally scheduled+extension[s])
190 (150+40)
47th
47th
Diet
47th
Type
E
Opened
November 9, 1964
Closed
December 18, 1964
Length in days(originally scheduled+extension[s])
40
48th
48th
Diet
48th
Type
R
Opened
December 21, 1964
Closed
June 1, 1965
Length in days(originally scheduled+extension[s])
163 (150+13)
49th
49th
Diet
49th
Type
E
Opened
July 22, 1965
Closed
August 11, 1965
Length in days(originally scheduled+extension[s])
21
50th
50th
Diet
50th
Type
E
Opened
October 5, 1965
Closed
December 13, 1965
Length in days(originally scheduled+extension[s])
70
51st
51st
Diet
51st
Type
R
Opened
December 20, 1965
Closed
June 27, 1966
Length in days(originally scheduled+extension[s])
190 (150+40)
52nd
52nd
Diet
52nd
Type
E
Opened
July 11, 1966
Closed
July 30, 1966
Length in days(originally scheduled+extension[s])
20
53rd
53rd
Diet
53rd
Type
E
Opened
November 30, 1966
Closed
December 20, 1966
Length in days(originally scheduled+extension[s])
21
54th (ja)
54th (ja)
Diet
54th (ja)
Type
R
Opened
December 27, 1966
Closed
December 27, 1966(dissolution)
Length in days(originally scheduled+extension[s])
1 (150)
55th
55th
Diet
55th
Type
S
Opened
February 15, 1967
Closed
July 21, 1967
Length in days(originally scheduled+extension[s])
157 (136+21)
56th
56th
Diet
56th
Type
E
Opened
July 27, 1967
Closed
August 18, 1967
Length in days(originally scheduled+extension[s])
23 (15+8)
57th
57th
Diet
57th
Type
E
Opened
December 4, 1967
Closed
December 23, 1967
Length in days(originally scheduled+extension[s])
20
58th
58th
Diet
58th
Type
R
Opened
December 27, 1967
Closed
June 3, 1968
Length in days(originally scheduled+extension[s])
160 (150+10)
59th
59th
Diet
59th
Type
E
Opened
August 1, 1968
Closed
August 10, 1968
Length in days(originally scheduled+extension[s])
10
60th
60th
Diet
60th
Type
E
Opened
December 10, 1968
Closed
December 21, 1968
Length in days(originally scheduled+extension[s])
12
61st
61st
Diet
61st
Type
R
Opened
December 27, 1968
Closed
August 5, 1969
Length in days(originally scheduled+extension[s])
222 (150+72)
62nd
62nd
Diet
62nd
Type
E
Opened
November 29, 1969
Closed
December 2, 1969(dissolution)
Length in days(originally scheduled+extension[s])
4 (14)
63rd
63rd
Diet
63rd
Type
S
Opened
January 14, 1970
Closed
May 13, 1970
Length in days(originally scheduled+extension[s])
120
64th (ja)
64th (ja)
Diet
64th (ja)
Type
E
Opened
November 24, 1970
Closed
December 18, 1970
Length in days(originally scheduled+extension[s])
25
65th
65th
Diet
65th
Type
R
Opened
December 26, 1970
Closed
May 24, 1971
Length in days(originally scheduled+extension[s])
150
66th
66th
Diet
66th
Type
E
Opened
July 14, 1971
Closed
July 24, 1971
Length in days(originally scheduled+extension[s])
11
67th
67th
Diet
67th
Type
E
Opened
October 16, 1971
Closed
December 27, 1971
Length in days(originally scheduled+extension[s])
73 (70+3)
68th
68th
Diet
68th
Type
R
Opened
December 29, 1971
Closed
June 16, 1972
Length in days(originally scheduled+extension[s])
171 (150+21)
69th
69th
Diet
69th
Type
E
Opened
July 6, 1972
Closed
July 12, 1972
Length in days(originally scheduled+extension[s])
7
70th
70th
Diet
70th
Type
E
Opened
October 27, 1972
Closed
November 13, 1972(dissolution)
Length in days(originally scheduled+extension[s])
18 (21)
71st (ja)
71st (ja)
Diet
71st (ja)
Type
S
Opened
December 22, 1972
Closed
September 27, 1973
Length in days(originally scheduled+extension[s])
280 (150+130)
72nd
72nd
Diet
72nd
Type
R
Opened
December 1, 1973
Closed
June 3, 1974
Length in days(originally scheduled+extension[s])
185 (150+35)
73rd
73rd
Diet
73rd
Type
E
Opened
July 24, 1974
Closed
July 31, 1974
Length in days(originally scheduled+extension[s])
8
74th
74th
Diet
74th
Type
E
Opened
December 9, 1974
Closed
December 25, 1974
Length in days(originally scheduled+extension[s])
17
75th
75th
Diet
75th
Type
R
Opened
December 27, 1974
Closed
July 4, 1975
Length in days(originally scheduled+extension[s])
190 (150+40)
76th
76th
Diet
76th
Type
E
Opened
September 11, 1975
Closed
December 25, 1975
Length in days(originally scheduled+extension[s])
106 (75+31)
77th
77th
Diet
77th
Type
R
Opened
December 27, 1975
Closed
May 24, 1976
Length in days(originally scheduled+extension[s])
150
78th
78th
Diet
78th
Type
E
Opened
September 16, 1976
Closed
November 4, 1976
Length in days(originally scheduled+extension[s])
50
79th
79th
Diet
79th
Type
E
Opened
December 24, 1976
Closed
December 28, 1976
Length in days(originally scheduled+extension[s])
5
80th
80th
Diet
80th
Type
R
Opened
December 30, 1976
Closed
June 9, 1977
Length in days(originally scheduled+extension[s])
162 (150+12)
81st
81st
Diet
81st
Type
E
Opened
July 27, 1977
Closed
August 3, 1977
Length in days(originally scheduled+extension[s])
8
82nd
82nd
Diet
82nd
Type
E
Opened
September 29, 1977
Closed
November 25, 1977
Length in days(originally scheduled+extension[s])
58 (40+18)
83rd
83rd
Diet
83rd
Type
E
Opened
December 7, 1977
Closed
December 10, 1977
Length in days(originally scheduled+extension[s])
4
84th
84th
Diet
84th
Type
R
Opened
December 19, 1977
Closed
June 16, 1978
Length in days(originally scheduled+extension[s])
180 (150+30)
85th
85th
Diet
85th
Type
E
Opened
September 18, 1978
Closed
October 21, 1978
Length in days(originally scheduled+extension[s])
34
86th
86th
Diet
86th
Type
E
Opened
December 6, 1978
Closed
December 12, 1978
Length in days(originally scheduled+extension[s])
7
87th
87th
Diet
87th
Type
R
Opened
December 22, 1978
Closed
June 14, 1979
Length in days(originally scheduled+extension[s])
175 (150+25)
88th
88th
Diet
88th
Type
E
Opened
August 30, 1979
Closed
September 7, 1979(dissolution)
Length in days(originally scheduled+extension[s])
9 (30)
89th
89th
Diet
89th
Type
S
Opened
October 30, 1979
Closed
November 16, 1979
Length in days(originally scheduled+extension[s])
18
90th
90th
Diet
90th
Type
E
Opened
November 26, 1979
Closed
December 11, 1979
Length in days(originally scheduled+extension[s])
16
91st
91st
Diet
91st
Type
R
Opened
December 21, 1979
Closed
May 19, 1980(dissolution)
Length in days(originally scheduled+extension[s])
151 (150+9)
92nd
92nd
Diet
92nd
Type
S
Opened
July 17, 1980
Closed
July 26, 1980
Length in days(originally scheduled+extension[s])
10
93rd
93rd
Diet
93rd
Type
E
Opened
September 29, 1980
Closed
November 29, 1980
Length in days(originally scheduled+extension[s])
62 (50+12)
94th
94th
Diet
94th
Type
R
Opened
December 22, 1980
Closed
June 6, 1981
Length in days(originally scheduled+extension[s])
167 (150+17)
95th
95th
Diet
95th
Type
E
Opened
September 27, 1981
Closed
November 28, 1981
Length in days(originally scheduled+extension[s])
66 (55+11)
96th (ja)
96th (ja)
Diet
96th (ja)
Type
R
Opened
December 21, 1981
Closed
August 21, 1982
Length in days(originally scheduled+extension[s])
244 (150+94)
97th
97th
Diet
97th
Type
E
Opened
November 26, 1982
Closed
December 25, 1982
Length in days(originally scheduled+extension[s])
30 (25+5)
98th
98th
Diet
98th
Type
R
Opened
December 28, 1982
Closed
May 26, 1983
Length in days(originally scheduled+extension[s])
150
99th
99th
Diet
99th
Type
E
Opened
July 18, 1983
Closed
July 23, 1983
Length in days(originally scheduled+extension[s])
6
100th
100th
Diet
100th
Type
E
Opened
September 8, 1983
Closed
November 28, 1983(dissolution)
Length in days(originally scheduled+extension[s])
82 (70+12)
101st
101st
Diet
101st
Type
S
Opened
December 26, 1983
Closed
August 8, 1984
Length in days(originally scheduled+extension[s])
227 (150+77)
102nd
102nd
Diet
102nd
Type
R
Opened
December 1, 1984
Closed
June 25, 1985
Length in days(originally scheduled+extension[s])
207 (150+57)
103rd
103rd
Diet
103rd
Type
E
Opened
October 14, 1985
Closed
December 21, 1985
Length in days(originally scheduled+extension[s])
69 (62+7)
104th
104th
Diet
104th
Type
R
Opened
December 24, 1985
Closed
May 22, 1986
Length in days(originally scheduled+extension[s])
150
105th (ja)
105th (ja)
Diet
105th (ja)
Type
E
Opened
June 2, 1986
Closed
June 2, 1986(dissolution)
Length in days(originally scheduled+extension[s])
1
106th
106th
Diet
106th
Type
S
Opened
July 22, 1986
Closed
July 25, 1986
Length in days(originally scheduled+extension[s])
4
107th
107th
Diet
107th
Type
E
Opened
September 11, 1986
Closed
July 25, 1986
Length in days(originally scheduled+extension[s])
4
108th
108th
Diet
108th
Type
R
Opened
December 29, 1986
Closed
May 27, 1987
Length in days(originally scheduled+extension[s])
150
109th
109th
Diet
109th
Type
E
Opened
July 6, 1987
Closed
September 19, 1987
Length in days(originally scheduled+extension[s])
76 (65+11)
110th
110th
Diet
110th
Type
E
Opened
November 6, 1987
Closed
November 11, 1987
Length in days(originally scheduled+extension[s])
6
111th
111th
Diet
111th
Type
E
Opened
November 27, 1987
Closed
December 12, 1987
Length in days(originally scheduled+extension[s])
16
112th
112th
Diet
112th
Type
R
Opened
December 28, 1987
Closed
May 25, 1988
Length in days(originally scheduled+extension[s])
150
113th
113th
Diet
113th
Type
E
Opened
July 19, 1988
Closed
December 28, 1988
Length in days(originally scheduled+extension[s])
163 (70+93)
114th
114th
Diet
114th
Type
R
Opened
December 30, 1988
Closed
June 22, 1989
Length in days(originally scheduled+extension[s])
175 (150+25)
115th
115th
Diet
115th
Type
E
Opened
August 7, 1989
Closed
August 12, 1989
Length in days(originally scheduled+extension[s])
6
116th
116th
Diet
116th
Type
E
Opened
September 28, 1989
Closed
December 16, 1989
Length in days(originally scheduled+extension[s])
80
117th
117th
Diet
117th
Type
R
Opened
December 25, 1989
Closed
January 24, 1990(dissolution)
Length in days(originally scheduled+extension[s])
31 (150)
118th
118th
Diet
118th
Type
S
Opened
February 27, 1990
Closed
June 26, 1990
Length in days(originally scheduled+extension[s])
120
119th
119th
Diet
119th
Type
E
Opened
October 12, 1990
Closed
November 10, 1990
Length in days(originally scheduled+extension[s])
30
120th
120th
Diet
120th
Type
R
Opened
December 10, 1990
Closed
May 8, 1991
Length in days(originally scheduled+extension[s])
150
121st
121st
Diet
121st
Type
E
Opened
August 5, 1991
Closed
October 4, 1991
Length in days(originally scheduled+extension[s])
61
122nd
122nd
Diet
122nd
Type
E
Opened
November 5, 1991
Closed
December 21, 1991
Length in days(originally scheduled+extension[s])
47 (36+11)
123rd
123rd
Diet
123rd
Type
R
Opened
January 24, 1992
Closed
June 21, 1992
Length in days(originally scheduled+extension[s])
150
124th
124th
Diet
124th
Type
E
Opened
August 7, 1992
Closed
August 11, 1992
Length in days(originally scheduled+extension[s])
5
125th
125th
Diet
125th
Type
E
Opened
October 30, 1992
Closed
December 10, 1992
Length in days(originally scheduled+extension[s])
42 (40+2)
126th
126th
Diet
126th
Type
R
Opened
January 22, 1993
Closed
June 18, 1993(dissolution)
Length in days(originally scheduled+extension[s])
148 (150)
127th
127th
Diet
127th
Type
S
Opened
August 5, 1993
Closed
August 28, 1993
Length in days(originally scheduled+extension[s])
24 (10+14)
128th
128th
Diet
128th
Type
E
Opened
September 17, 1993
Closed
January 29, 1994
Length in days(originally scheduled+extension[s])
135 (90+45)
129th
129th
Diet
129th
Type
R
Opened
January 31, 1994
Closed
June 29, 1994
Length in days(originally scheduled+extension[s])
150
130th
130th
Diet
130th
Type
E
Opened
July 18, 1994
Closed
July 22, 1994
Length in days(originally scheduled+extension[s])
5
131st
131st
Diet
131st
Type
E
Opened
September 30, 1994
Closed
December 9, 1994
Length in days(originally scheduled+extension[s])
71 (65+6)
132nd
132nd
Diet
132nd
Type
R
Opened
January 20, 1995
Closed
June 18, 1995
Length in days(originally scheduled+extension[s])
150
133rd
133rd
Diet
133rd
Type
E
Opened
August 4, 1995
Closed
August 8, 1995
Length in days(originally scheduled+extension[s])
5
134th
134th
Diet
134th
Type
E
Opened
September 29, 1995
Closed
December 15, 1995
Length in days(originally scheduled+extension[s])
78 (46+32)
135th
135th
Diet
135th
Type
E
Opened
January 11, 1996
Closed
January 13, 1996
Length in days(originally scheduled+extension[s])
3
136th (ja)
136th (ja)
Diet
136th (ja)
Type
R
Opened
January 22, 1996
Closed
June 19, 1996
Length in days(originally scheduled+extension[s])
150
137th
137th
Diet
137th
Type
E
Opened
September 27, 1996
Closed
September 27, 1996(dissolution)
Length in days(originally scheduled+extension[s])
1
138th
138th
Diet
138th
Type
S
Opened
November 7, 1996
Closed
November 12, 1996
Length in days(originally scheduled+extension[s])
6
139th
139th
Diet
139th
Type
E
Opened
November 29, 1996
Closed
December 18, 1996
Length in days(originally scheduled+extension[s])
20
140th
140th
Diet
140th
Type
R
Opened
January 20, 1997
Closed
June 18, 1997
Length in days(originally scheduled+extension[s])
150
141st
141st
Diet
141st
Type
E
Opened
September 29, 1997
Closed
December 12, 1997
Length in days(originally scheduled+extension[s])
75
142nd
142nd
Diet
142nd
Type
R
Opened
January 12, 1998
Closed
June 18, 1998
Length in days(originally scheduled+extension[s])
158 (150+8)
143rd (ja)
143rd (ja)
Diet
143rd (ja)
Type
E
Opened
July 30, 1998
Closed
October 16, 1998
Length in days(originally scheduled+extension[s])
79 (70+9)
144th
144th
Diet
144th
Type
E
Opened
November 27, 1998
Closed
December 14, 1998
Length in days(originally scheduled+extension[s])
18
145th
145th
Diet
145th
Type
R
Opened
January 19, 1999
Closed
August 13, 1999
Length in days(originally scheduled+extension[s])
207 (150+57)
146th
146th
Diet
146th
Type
E
Opened
October 29, 1999
Closed
December 15, 1999
Length in days(originally scheduled+extension[s])
48
147th
147th
Diet
147th
Type
R
Opened
January 20, 2000
Closed
June 2, 2000(dissolution)
Length in days(originally scheduled+extension[s])
135 (150)
148th (ja)
148th (ja)
Diet
148th (ja)
Type
S
Opened
July 4, 2000
Closed
July 6, 2000
Length in days(originally scheduled+extension[s])
3
149th
149th
Diet
149th
Type
E
Opened
July 28, 2000
Closed
August 9, 2000
Length in days(originally scheduled+extension[s])
13
150th
150th
Diet
150th
Type
E
Opened
September 21, 2000
Closed
December 1, 2000
Length in days(originally scheduled+extension[s])
72
151st
151st
Diet
151st
Type
R
Opened
January 31, 2001
Closed
June 29, 2001
Length in days(originally scheduled+extension[s])
150
152nd
152nd
Diet
152nd
Type
E
Opened
August 7, 2001
Closed
August 10, 2001
Length in days(originally scheduled+extension[s])
4
153rd
153rd
Diet
153rd
Type
E
Opened
September 27, 2001
Closed
December 7, 2001
Length in days(originally scheduled+extension[s])
72
154th
154th
Diet
154th
Type
R
Opened
January 21, 2002
Closed
July 31, 2002
Length in days(originally scheduled+extension[s])
192 (150+42)
155th
155th
Diet
155th
Type
E
Opened
October 18, 2002
Closed
December 13, 2002
Length in days(originally scheduled+extension[s])
57
156th
156th
Diet
156th
Type
R
Opened
January 20, 2003
Closed
July 28, 2003
Length in days(originally scheduled+extension[s])
190 (150+40)
157th
157th
Diet
157th
Type
E
Opened
September 29, 2003
Closed
October 10, 2003(dissolution)
Length in days(originally scheduled+extension[s])
15 (36)
158th
158th
Diet
158th
Type
S
Opened
November 19, 2003
Closed
November 27, 2003
Length in days(originally scheduled+extension[s])
9
159th
159th
Diet
159th
Type
R
Opened
January 19, 2004
Closed
June 16, 2004
Length in days(originally scheduled+extension[s])
150
160th
160th
Diet
160th
Type
E
Opened
July 30, 2004
Closed
August 6, 2004
Length in days(originally scheduled+extension[s])
8
161st
161st
Diet
161st
Type
E
Opened
October 12, 2004
Closed
December 3, 2004
Length in days(originally scheduled+extension[s])
53
162nd
162nd
Diet
162nd
Type
R
Opened
January 21, 2005
Closed
August 8, 2005(dissolution)
Length in days(originally scheduled+extension[s])
200 (150+55)
163rd (ja)
163rd (ja)
Diet
163rd (ja)
Type
S
Opened
September 21, 2005
Closed
November 1, 2005
Length in days(originally scheduled+extension[s])
42
164th (ja)
164th (ja)
Diet
164th (ja)
Type
R
Opened
January 20, 2006
Closed
June 18, 2006
Length in days(originally scheduled+extension[s])
150
165th (ja)
165th (ja)
Diet
165th (ja)
Type
S
Opened
September 26, 2006
Closed
December 19, 2006
Length in days(originally scheduled+extension[s])
85 (81+4)
166th (ja)
166th (ja)
Diet
166th (ja)
Type
R
Opened
January 25, 2007
Closed
July 5, 2007
Length in days(originally scheduled+extension[s])
162 (150+12)
167th (ja)
167th (ja)
Diet
167th (ja)
Type
E
Opened
August 7, 2007
Closed
August 10, 2007
Length in days(originally scheduled+extension[s])
4
168th (ja)
168th (ja)
Diet
168th (ja)
Type
E
Opened
September 10, 2007
Closed
January 15, 2008
Length in days(originally scheduled+extension[s])
128 (62+66)
169th (ja)
169th (ja)
Diet
169th (ja)
Type
R
Opened
January 18, 2008
Closed
June 21, 2008
Length in days(originally scheduled+extension[s])
156 (150+6)
170th (ja)
170th (ja)
Diet
170th (ja)
Type
E
Opened
September 24, 2008
Closed
December 25, 2008
Length in days(originally scheduled+extension[s])
93 (68+25)
171st (ja)
171st (ja)
Diet
171st (ja)
Type
R
Opened
January 5, 2009
Closed
July 21, 2009(dissolution)
Length in days(originally scheduled+extension[s])
198 (150+55)
172nd (ja)
172nd (ja)
Diet
172nd (ja)
Type
S
Opened
September 16, 2009
Closed
September 19, 2009
Length in days(originally scheduled+extension[s])
4
173rd (ja)
173rd (ja)
Diet
173rd (ja)
Type
E
Opened
October 26, 2009
Closed
December 4, 2009
Length in days(originally scheduled+extension[s])
40 (36+4)
174th (ja)
174th (ja)
Diet
174th (ja)
Type
R
Opened
January 18, 2010
Closed
June 16, 2010
Length in days(originally scheduled+extension[s])
150
175th (ja)
175th (ja)
Diet
175th (ja)
Type
E
Opened
July 30, 2010
Closed
August 6, 2010
Length in days(originally scheduled+extension[s])
8
176th (ja)
176th (ja)
Diet
176th (ja)
Type
E
Opened
October 1, 2010
Closed
December 3, 2010
Length in days(originally scheduled+extension[s])
64
177th (ja)
177th (ja)
Diet
177th (ja)
Type
R
Opened
January 24, 2011
Closed
August 31, 2011
Length in days(originally scheduled+extension[s])
220 (150+70)
178th (ja)
178th (ja)
Diet
178th (ja)
Type
E
Opened
September 13, 2011
Closed
September 30, 2011
Length in days(originally scheduled+extension[s])
18 (4+14)
179th (ja)
179th (ja)
Diet
179th (ja)
Type
E
Opened
October 20, 2011
Closed
December 9, 2011
Length in days(originally scheduled+extension[s])
51
180th (ja)
180th (ja)
Diet
180th (ja)
Type
R
Opened
January 24, 2012
Closed
September 8, 2012
Length in days(originally scheduled+extension[s])
229 (150+79)
181st (ja)
181st (ja)
Diet
181st (ja)
Type
E
Opened
October 29, 2012
Closed
November 16, 2012(dissolution)
Length in days(originally scheduled+extension[s])
19 (33)
182nd (ja)
182nd (ja)
Diet
182nd (ja)
Type
S
Opened
December 26, 2012
Closed
December 28, 2012
Length in days(originally scheduled+extension[s])
3
183rd (ja)
183rd (ja)
Diet
183rd (ja)
Type
R
Opened
January 28, 2013
Closed
June 26, 2013
Length in days(originally scheduled+extension[s])
150
184th (ja)
184th (ja)
Diet
184th (ja)
Type
E
Opened
August 2, 2013
Closed
August 7, 2013
Length in days(originally scheduled+extension[s])
6
185th (ja)
185th (ja)
Diet
185th (ja)
Type
E
Opened
October 15, 2013
Closed
December 8, 2013
Length in days(originally scheduled+extension[s])
55 (53+2)
186th (ja)
186th (ja)
Diet
186th (ja)
Type
R
Opened
January 24, 2014
Closed
June 22, 2014
Length in days(originally scheduled+extension[s])
150
187th (ja)
187th (ja)
Diet
187th (ja)
Type
E
Opened
September 29, 2014
Closed
November 21, 2014(dissolution)
Length in days(originally scheduled+extension[s])
54 (63)
188th (ja)
188th (ja)
Diet
188th (ja)
Type
S
Opened
December 24, 2014
Closed
December 26, 2014
Length in days(originally scheduled+extension[s])
3
189th (ja)
189th (ja)
Diet
189th (ja)
Type
R
Opened
January 26, 2015
Closed
September 27, 2015
Length in days(originally scheduled+extension[s])
245 (150+95)
190th (ja)
190th (ja)
Diet
190th (ja)
Type
R
Opened
January 4, 2016
Closed
June 1, 2016
Length in days(originally scheduled+extension[s])
150
191st (ja)
191st (ja)
Diet
191st (ja)
Type
E
Opened
August 1, 2016
Closed
August 3, 2016
Length in days(originally scheduled+extension[s])
3
192nd (ja)
192nd (ja)
Diet
192nd (ja)
Type
E
Opened
September 26, 2016
Closed
December 17, 2016
Length in days(originally scheduled+extension[s])
83 (66+17)
193rd (ja)
193rd (ja)
Diet
193rd (ja)
Type
R
Opened
January 20, 2017
Closed
June 18, 2017
Length in days(originally scheduled+extension[s])
150
194th (ja)
194th (ja)
Diet
194th (ja)
Type
E
Opened
September 28, 2017
Closed
September 28, 2017(dissolution)
Length in days(originally scheduled+extension[s])
1
195th (ja)
195th (ja)
Diet
195th (ja)
Type
S
Opened
November 1, 2017
Closed
December 9, 2017
Length in days(originally scheduled+extension[s])
39
196th (ja)
196th (ja)
Diet
196th (ja)
Type
R
Opened
January 22, 2018
Closed
July 22, 2018
Length in days(originally scheduled+extension[s])
182 (150+32)
197th (ja)
197th (ja)
Diet
197th (ja)
Type
E
Opened
October 24, 2018
Closed
December 10, 2018
Length in days(originally scheduled+extension[s])
48
198th (ja)
198th (ja)
Diet
198th (ja)
Type
R
Opened
January 28, 2019
Closed
June 26, 2019
Length in days(originally scheduled+extension[s])
150
199th (ja)
199th (ja)
Diet
199th (ja)
Type
E
Opened
August 1, 2019
Closed
August 5, 2019
Length in days(originally scheduled+extension[s])
5
200th (ja)
200th (ja)
Diet
200th (ja)
Type
E
Opened
October 4, 2019
Closed
December 9, 2019
Length in days(originally scheduled+extension[s])
67
201st (ja)
201st (ja)
Diet
201st (ja)
Type
R
Opened
January 20, 2020
Closed
June 17, 2020
Length in days(originally scheduled+extension[s])
150
202nd (ja)
202nd (ja)
Diet
202nd (ja)
Type
E
Opened
September 16, 2020
Closed
September 18, 2020
Length in days(originally scheduled+extension[s])
3
203rd (ja)
203rd (ja)
Diet
203rd (ja)
Type
E
Opened
October 26, 2020
Closed
December 5, 2020
Length in days(originally scheduled+extension[s])
41
204th (ja)
204th (ja)
Diet
204th (ja)
Type
R
Opened
January 18, 2021
Closed
June 16, 2021
Length in days(originally scheduled+extension[s])
150
205th (ja)
205th (ja)
Diet
205th (ja)
Type
E
Opened
October 4, 2021
Closed
October 14, 2021(dissolution)
Length in days(originally scheduled+extension[s])
11
206th (ja)
206th (ja)
Diet
206th (ja)
Type
S
Opened
November 10, 2021
Closed
November 12, 2021
Length in days(originally scheduled+extension[s])
3
207th (ja)
207th (ja)
Diet
207th (ja)
Type
E
Opened
December 6, 2021
Closed
December 21, 2021
Length in days(originally scheduled+extension[s])
16
208th (ja)
208th (ja)
Diet
208th (ja)
Type
R
Opened
January 17, 2022
Closed
June 15, 2022
Length in days(originally scheduled+extension[s])
150
209th (ja)
209th (ja)
Diet
209th (ja)
Type
E
Opened
August 3, 2022
Closed
August 5, 2022
Length in days(originally scheduled+extension[s])
3
210th (ja)
210th (ja)
Diet
210th (ja)
Type
E
Opened
October 3, 2022
Closed
December 10, 2022
Length in days(originally scheduled+extension[s])
69
211th (ja)
211th (ja)
Diet
211th (ja)
Type
R
Opened
January 23, 2023
Closed
June 21, 2023
Length in days(originally scheduled+extension[s])
150
212th (ja)
212th (ja)
Diet
212th (ja)
Type
E
Opened
October 20, 2023
Closed
December 13, 2023
Length in days(originally scheduled+extension[s])
55
213th (ja)
213th (ja)
Diet
213th (ja)
Type
R
Opened
January 26, 2024
Closed
June 23, 2024
Length in days(originally scheduled+extension[s])
150
214th (ja)
214th (ja)
Diet
214th (ja)
Type
E
Opened
October 1, 2024
Closed
October 9, 2024(dissolution)
Length in days(originally scheduled+extension[s])
9
215th (ja)
215th (ja)
Diet
215th (ja)
Type
S
Opened
November 11, 2024
Closed
November 14, 2024
Length in days(originally scheduled+extension[s])
4
216th (ja)
216th (ja)
Diet
216th (ja)
Type
E
Opened
November 28, 2024
Closed
December 24, 2024
Length in days(originally scheduled+extension[s])
27
217th (ja)
217th (ja)
Diet
217th (ja)
Type
R
Opened
January 24, 2025
Closed
June 22, 2025
Length in days(originally scheduled+extension[s])
150
218th (ja)
218th (ja)
Diet
218th (ja)
Type
E
Opened
August 1, 2025
Closed
August 5, 2025
Length in days(originally scheduled+extension[s])
5
219th (ja)
219th (ja)
Diet
219th (ja)
Type
E
Opened
October 21, 2025
Closed
Ongoing
Diet
Type
Opened
Closed
Length in days(originally scheduled+extension[s])
1st
S
May 20, 1947
December 9, 1947
204 (50+154)
2nd
R
December 10, 1947
July 5, 1948
209 (150+59)
3rd
E
October 11, 1948
November 30, 1948
51 (30+21)
4th
R
December 1, 1948
December 23, 1948(dissolution)
23 (150)
5th
S
February 11, 1949
May 31, 1949
110 (70+40)
6th
E
October 25, 1949
December 3, 1949
40 (30+10)
7th
R
December 4, 1949
May 2, 1950
150
8th
E
July 21, 1950
July 31, 1950
20
9th
E
November 21, 1950
December 9, 1950
19 (18+1)
10th
R
December 10, 1950
June 5, 1951
178 (150+28)
11th
E
August 16, 1951
August 18, 1951
3
12th
E
October 10, 1951
November 30, 1951
52 (40+12)
13th
R
December 10, 1951
July 31, 1952
225 (150+85)
14th (ja)
R
August 26, 1952
August 28, 1952(dissolution)
3 (150)
–
[HCES]
August 31, 1952
August 31, 1952
15th (ja)
S
October 24, 1952
March 14, 1953(dissolution)
142 (60+99)
–
[HCES]
March 18, 1953
March 20, 1953
16th
S
May 18, 1953
August 10, 1953
85 (75+10)
17th
E
October 29, 1953
November 7, 1953
10 (7+3)
18th
E
November 30, 1953
December 8, 1953
9
19th
R
December 10, 1953
June 15, 1957
188 (150+38)
20th
E
November 30, 1954
December 9, 1954
10 (9+1)
21st
R
December 10, 1954
January 24, 1955(dissolution)
46 (150)
22nd
S
March 18, 1955
July 30, 1955
135 (105+30)
23rd
E
November 22, 1955
December 16, 1955
25
24th
R
December 20, 1955
June 3, 1956
167 (150+17)
25th
E
November 12, 1956
December 13, 1956
32 (25+7)
26th
R
December 20, 1956
May 19, 1957
151 (150+1)
27th
E
November 1, 1957
November 14, 1957
14 (12+2)
28th
R
December 20, 1957
April 25, 1958(dissolution)
127 (150)
29th
S
June 10, 1958
July 8, 1958
29 (25+4)
30th
E
September 29, 1958
December 7, 1958
70 (40+30)
31st
R
December 10, 1958
May 2, 1959
144
32nd
E
June 22, 1959
July 3, 1959
12
33rd
E
October 26, 1959
December 27, 1959
63 (60+13)
34th
R
December 29, 1959
July 15, 1960
200 (150+50)
35th
E
July 18, 1960
July 22, 1960
5
36th
E
October 17, 1960
October 24, 1960(dissolution)
8 (10)
37th
S
December 5, 1960
December 22, 1960
18
38th
R
December 26, 1960
June 8, 1961
165 (150+15)
39th
E
September 25, 1961
October 31, 1961
37
40th
R
December 9, 1961
May 7, 1962
150
41st
E
August 4, 1962
September 2, 1962
30
42nd
E
December 8, 1962
December 23, 1962
16 (12+4)
43rd
R
December 24, 1962
July 6, 1963
195 (150+45)
44th
E
October 15, 1963
October 23, 1963(dissolution)
9 (30)
45th
S
December 4, 1963
December 18, 1963
15
46th
R
December 20, 1963
June 26, 1964
190 (150+40)
47th
E
November 9, 1964
December 18, 1964
40
· List of House of Representatives general elections › 19th century
Yamagata Aritomo
Yamagata Aritomo
Election
1st
Date
1 July 1890
Prime Minister appointed by Emperor(during term)
Yamagata Aritomo
Turnout
93.91%
Seats
300
Registeredvoters
450,872
Largest party / Seats Share
Constitutional Liberal
Largest party / Seats Share
130
Largest party / Seats Share
43.33%
Matsukata Masayoshi
Matsukata Masayoshi
Election
2nd
Date
15 February 1892
Prime Minister appointed by Emperor(during term)
Matsukata Masayoshi
Turnout
91.59%
Seats
(D) December 25, 1891
Date ofdissolution (D) /expiration of term (E)
434,594
Registeredvoters
094
Largest party / Seats Share
31.33%
Itō Hirobumi
Itō Hirobumi
Election
3rd
Date
March 1, 1894
Prime Minister appointed by Emperor(during term)
Itō Hirobumi
Turnout
88.76%
Seats
(D) December 30, 1893
Date ofdissolution (D) /expiration of term (E)
440,113
Registeredvoters
120
Largest party / Seats Share
40.00%
Itō Hirobumi
Itō Hirobumi
Election
4th
Date
1 September 1894
Prime Minister appointed by Emperor(during term)
Itō Hirobumi
Turnout
84.84%
Seats
(D) June 2, 1894
Date ofdissolution (D) /expiration of term (E)
460,483
Registeredvoters
107
Largest party / Seats Share
35.66%
Itō Hirobumi
Itō Hirobumi
Election
5th
Date
15 March 1898
Prime Minister appointed by Emperor(during term)
Itō Hirobumi
Turnout
87.50%
Seats
(D) December 25, 1897
Date ofdissolution (D) /expiration of term (E)
452,637
Registeredvoters
105
Largest party / Seats Share
35.00%
Ōkuma Shigenobu
Ōkuma Shigenobu
Election
6th
Date
10 August 1898
Prime Minister appointed by Emperor(during term)
Ōkuma Shigenobu
Turnout
79.91%
Seats
(D) June 10, 1898
Date ofdissolution (D) /expiration of term (E)
502,292
Registeredvoters
Kensei Hontō
Largest party / Seats Share
124
Largest party / Seats Share
41.33%
Election
Date
Prime Minister appointed by Emperor(during term)
Turnout
Seats
Date ofdissolution (D) /expiration of term (E)
Registeredvoters
Largest party / Seats Share
Emperor
Imperial Diet (1890–1947); upper house: House of Peers
Meiji(era)
1st
1 July 1890
Yamagata Aritomo
93.91%
300
450,872
Constitutional Liberal
130
43.33%
(Matsukata Masayoshi)
2nd
15 February 1892
Matsukata Masayoshi
91.59%
(D) December 25, 1891
434,594
094
31.33%
(Itō Hirobumi)
3rd
March 1, 1894
Itō Hirobumi
88.76%
(D) December 30, 1893
440,113
120
40.00%
4th
1 September 1894
Itō Hirobumi
84.84%
(D) June 2, 1894
460,483
107
35.66%
(Matsukata Masayoshi)
(Itō Hirobumi)
5th
15 March 1898
Itō Hirobumi
87.50%
(D) December 25, 1897
452,637
105
35.00%
(Ōkuma Shigenobu)
6th
10 August 1898
Ōkuma Shigenobu
79.91%
(D) June 10, 1898
502,292
Kensei Hontō
124
41.33%
(Yamagata Aritomo)
(Itō Hirobumi)
(Katsura Tarō)
· List of House of Representatives general elections › 20th century
Katsura Tarō
Katsura Tarō
Election
7th
Date
August 10, 1902
Prime Minister appointed by Emperor(during term)
Katsura Tarō
Turnout
88.39%
Seats
376
Date ofdissolution (D) /expiration of term (E)
(E) August 9, 1902
Registeredvoters
982,868
Largest party / Seats Share
Rikken Seiyūkai
Largest party / Seats Share
191
Largest party / Seats Share
50.79%
Emperor
Meiji(era)
86.17%
86.17%
Election
8th
Date
March 1, 1903
Prime Minister appointed by Emperor(during term)
86.17%
Turnout
(D) December 28, 1902
Seats
958,322
Date ofdissolution (D) /expiration of term (E)
175
Registeredvoters
46.54%
Katsura Tarō
Katsura Tarō
Election
9th
Date
1 March 1904
Prime Minister appointed by Emperor(during term)
Katsura Tarō
Turnout
86.06%
Seats
379
Date ofdissolution (D) /expiration of term (E)
(D) December 11, 1903
Registeredvoters
762,445
Largest party / Seats Share
133
Largest party / Seats Share
35.09%
Saionji Kinmochi
Saionji Kinmochi
Election
10th
Date
15 May 1908
Prime Minister appointed by Emperor(during term)
Saionji Kinmochi
Turnout
85.29%
Seats
(E) March 27, 1908
Date ofdissolution (D) /expiration of term (E)
1,590,045
Registeredvoters
187
Largest party / Seats Share
49.34%
Saionji Kinmochi
Saionji Kinmochi
Election
11th
Date
15 May 1912
Prime Minister appointed by Emperor(during term)
Saionji Kinmochi
Turnout
89.58%
Seats
381
Date ofdissolution (D) /expiration of term (E)
(E) May 14, 1912
Registeredvoters
1,506,143
Largest party / Seats Share
209
Largest party / Seats Share
54.85%
Ōkuma Shigenobu
Ōkuma Shigenobu
Election
12th
Date
25 March 1915
Prime Minister appointed by Emperor(during term)
Ōkuma Shigenobu
Turnout
92.13%
Seats
(D) December 25, 1914
Date ofdissolution (D) /expiration of term (E)
1,546,411
Registeredvoters
Rikken Dōshikai
Largest party / Seats Share
153
Largest party / Seats Share
40.15%
Terauchi Masatake
Terauchi Masatake
Election
13th
Date
20 April 1917
Prime Minister appointed by Emperor(during term)
Terauchi Masatake
Turnout
91.92%
Seats
(D) January 25, 1917
Date ofdissolution (D) /expiration of term (E)
1,422,126
Registeredvoters
Rikken Seiyūkai
Largest party / Seats Share
165
Largest party / Seats Share
43.30%
Hara Takashi
Hara Takashi
Election
14th
Date
10 May 1920
Prime Minister appointed by Emperor(during term)
Hara Takashi
Turnout
86.73%
Seats
464
Date ofdissolution (D) /expiration of term (E)
(D) February 26, 1920
Registeredvoters
3,069,148
Largest party / Seats Share
278
Largest party / Seats Share
59.91%
Katō Takaaki
Katō Takaaki
Election
15th
Date
10 May 1924
Prime Minister appointed by Emperor(during term)
Katō Takaaki
Turnout
91.18%
Seats
(D) January 31, 1924
Date ofdissolution (D) /expiration of term (E)
3,288,405
Registeredvoters
Kenseikai
Largest party / Seats Share
151
Largest party / Seats Share
32.54%
Tanaka Giichi
Tanaka Giichi
Election
16th
Date
20 February 1928
Prime Minister appointed by Emperor(during term)
Tanaka Giichi
Turnout
80.36%
Seats
466
Date ofdissolution (D) /expiration of term (E)
(D) January 21, 1928
Registeredvoters
12,408,678
Largest party / Seats Share
Rikken Seiyūkai
Largest party / Seats Share
218
Largest party / Seats Share
46.78%
Hamaguchi Osachi
Hamaguchi Osachi
Election
17th
Date
20 February 1930
Prime Minister appointed by Emperor(during term)
Hamaguchi Osachi
Turnout
83.34%
Seats
(D) January 21, 1930
Date ofdissolution (D) /expiration of term (E)
12,812,895
Registeredvoters
Rikken Minseitō
Largest party / Seats Share
273
Largest party / Seats Share
58.58%
Inukai Tsuyoshi
Inukai Tsuyoshi
Election
18th
Date
20 February 1932
Prime Minister appointed by Emperor(during term)
Inukai Tsuyoshi
Turnout
81.68%
Seats
(D) January 21, 1932
Date ofdissolution (D) /expiration of term (E)
13,237,841
Registeredvoters
Rikken Seiyukai
Largest party / Seats Share
301
Largest party / Seats Share
64.59%
Kōki Hirota
Kōki Hirota
Election
19th
Date
20 February 1936
Prime Minister appointed by Emperor(during term)
Kōki Hirota
Turnout
78.65%
Seats
(D) January 21, 1936
Date ofdissolution (D) /expiration of term (E)
14,479,553
Registeredvoters
Rikken Minseitō
Largest party / Seats Share
205
Largest party / Seats Share
43.99%
Senjūrō Hayashi
Senjūrō Hayashi
Election
20th
Date
30 April 1937
Prime Minister appointed by Emperor(during term)
Senjūrō Hayashi
Turnout
73.31%
Seats
(D) March 31, 1937
Date ofdissolution (D) /expiration of term (E)
14,618,298
Registeredvoters
179
Largest party / Seats Share
38.41%
Hideki Tojo
Hideki Tojo
Election
21st
Date
30 April 1942
Prime Minister appointed by Emperor(during term)
Hideki Tojo
Turnout
83.16%
Seats
(E) April 29, 1942
Date ofdissolution (D) /expiration of term (E)
14,594,287
Registeredvoters
Imperial Rule Assistance Association
Largest party / Seats Share
381
Largest party / Seats Share
81.75%
Shigeru Yoshida
Shigeru Yoshida
Election
22nd
Date
April 10, 1946
Prime Minister appointed by Emperor(during term)
Shigeru Yoshida
Turnout
72.08%
Seats
(D) December 18, 1945
Date ofdissolution (D) /expiration of term (E)
36,878,420
Registeredvoters
Liberal
Largest party / Seats Share
141
Largest party / Seats Share
30.25%
Tetsu Katayama
Tetsu Katayama
Election
23rd
Date
25 April 1947
Prime Minister appointed by Emperor(during term)
Tetsu Katayama
Turnout
67.95%
Seats
(D) March 31, 1947
Date ofdissolution (D) /expiration of term (E)
40,907,493
Registeredvoters
Socialist
Largest party / Seats Share
143
Largest party / Seats Share
30.68%
Shigeru Yoshida
Shigeru Yoshida
Election
24th
Date
23 January 1949
Prime Minister appointed by Emperor(during term)
Shigeru Yoshida
Turnout
74.04%
Seats
466
Date ofdissolution (D) /expiration of term (E)
(D) December 23, 1948
Registeredvoters
42,105,300
Largest party / Seats Share
Democratic Liberal
Largest party / Seats Share
264
Largest party / Seats Share
56.65%
Shigeru Yoshida
Shigeru Yoshida
Election
25th
Date
October 1, 1952
Prime Minister appointed by Emperor(during term)
Shigeru Yoshida
Turnout
76.43%
Seats
(D) August 28, 1952
Date ofdissolution (D) /expiration of term (E)
46,772,584
Registeredvoters
Liberal
Largest party / Seats Share
240
Largest party / Seats Share
51.50%
Shigeru Yoshida
Shigeru Yoshida
Election
26th
Date
19 April 1953
Prime Minister appointed by Emperor(during term)
Shigeru Yoshida
Turnout
74.22%
Seats
(D) March 14, 1953
Date ofdissolution (D) /expiration of term (E)
47,090,167
Registeredvoters
LiberalYoshida faction
Largest party / Seats Share
199
Largest party / Seats Share
42.70%
Ichirō Hatoyama
Ichirō Hatoyama
Election
27th
Date
27 February 1955
Prime Minister appointed by Emperor(during term)
Ichirō Hatoyama
Turnout
75.84%
Seats
467
Date ofdissolution (D) /expiration of term (E)
(D) January 24, 1955
Registeredvoters
49,235,375
Largest party / Seats Share
Democratic
Largest party / Seats Share
185
Largest party / Seats Share
39.61%
Nobusuke Kishi
Nobusuke Kishi
Election
28th
Date
22 May 1958
Prime Minister appointed by Emperor(during term)
Nobusuke Kishi
Turnout
76.99%
Seats
(D) April 25, 1958
Date ofdissolution (D) /expiration of term (E)
52,013,529
Registeredvoters
Liberal Democratic
Largest party / Seats Share
287
Largest party / Seats Share
61.45%
Hayato Ikeda
Hayato Ikeda
Election
29th
Date
November 20, 1960
Prime Minister appointed by Emperor(during term)
Hayato Ikeda
Turnout
73.51%
Seats
(D) October 24, 1960
Date ofdissolution (D) /expiration of term (E)
54,312,993
Registeredvoters
296
Largest party / Seats Share
63.38%
Hayato Ikeda
Hayato Ikeda
Election
30th
Date
21 November 1963
Prime Minister appointed by Emperor(during term)
Hayato Ikeda
Turnout
71.14%
Seats
(D) October 23, 1963
Date ofdissolution (D) /expiration of term (E)
58,281,678
Registeredvoters
283
Largest party / Seats Share
60.59%
Eisaku Satō
Eisaku Satō
Election
31st
Date
January 29, 1967
Prime Minister appointed by Emperor(during term)
Eisaku Satō
Turnout
73.99%
Seats
486
Date ofdissolution (D) /expiration of term (E)
(D) December 27, 1966
Registeredvoters
62,992,796
Largest party / Seats Share
277
Largest party / Seats Share
56.99%
Eisaku Satō
Eisaku Satō
Election
32nd
Date
27 December 1969
Prime Minister appointed by Emperor(during term)
Eisaku Satō
Turnout
68.51%
Seats
(D) December 2, 1969
Date ofdissolution (D) /expiration of term (E)
69,260,424
Registeredvoters
288
Largest party / Seats Share
59.25%
Kakuei Tanaka
Kakuei Tanaka
Election
33rd
Date
10 December 1972
Prime Minister appointed by Emperor(during term)
Kakuei Tanaka
Turnout
71.76%
Seats
491
Date ofdissolution (D) /expiration of term (E)
(D) November 13, 1972
Registeredvoters
73,769,636
Largest party / Seats Share
271
Largest party / Seats Share
55.19%
Takeo Fukuda
Takeo Fukuda
Election
34th
Date
5 December 1976
Prime Minister appointed by Emperor(during term)
Takeo Fukuda
Turnout
73.45%
Seats
511
Date ofdissolution (D) /expiration of term (E)
(E) December 9, 1976
Registeredvoters
77,926,588
Largest party / Seats Share
249
Largest party / Seats Share
48.72%
Masayoshi Ōhira
Masayoshi Ōhira
Election
35th
Date
October 7, 1979
Prime Minister appointed by Emperor(during term)
Masayoshi Ōhira
Turnout
68.01%
Seats
(D) September 7, 1979
Date ofdissolution (D) /expiration of term (E)
80,169,924
Registeredvoters
248
Largest party / Seats Share
48.53%
Zenkō Suzuki
Zenkō Suzuki
Election
36th
Date
22 June 1980
Prime Minister appointed by Emperor(during term)
Zenkō Suzuki
Turnout
74.57%
Seats
(D) May 19, 1980
Date ofdissolution (D) /expiration of term (E)
80,925,034
Registeredvoters
284
Largest party / Seats Share
55.57%
Yasuhiro Nakasone
Yasuhiro Nakasone
Election
37th
Date
December 18, 1983
Prime Minister appointed by Emperor(during term)
Yasuhiro Nakasone
Turnout
67.94%
Seats
(D) November 28, 1983
Date ofdissolution (D) /expiration of term (E)
84,252,608
Registeredvoters
250
Largest party / Seats Share
48.92%
Yasuhiro Nakasone
Yasuhiro Nakasone
Election
38th
Date
2 June 1986
Prime Minister appointed by Emperor(during term)
Yasuhiro Nakasone
Turnout
71.40%
Seats
512
Date ofdissolution (D) /expiration of term (E)
(D) June 2, 1986
Registeredvoters
86,426,845
Largest party / Seats Share
300
Largest party / Seats Share
58.59%
Toshiki Kaifu
Toshiki Kaifu
Election
39th
Date
18 February 1990
Prime Minister appointed by Emperor(during term)
Toshiki Kaifu
Turnout
73.31%
Seats
(D) January 24, 1990
Date ofdissolution (D) /expiration of term (E)
90,322,908
Registeredvoters
275
Largest party / Seats Share
53.71%
Morihiro Hosokawa
Morihiro Hosokawa
Election
40th
Date
18 July 1993
Prime Minister appointed by Emperor(during term)
Morihiro Hosokawa
Turnout
67.26%
Seats
511
Date ofdissolution (D) /expiration of term (E)
(D) June 18, 1993
Registeredvoters
94,477,816
Largest party / Seats Share
223
Largest party / Seats Share
43.63%
Ryūtarō Hashimoto
Ryūtarō Hashimoto
Election
41st
Date
20 October 1996
Prime Minister appointed by Emperor(during term)
Ryūtarō Hashimoto
Turnout
59.65%
Seats
500
Date ofdissolution (D) /expiration of term (E)
(D) September 27, 1996
Registeredvoters
97,680,719
Largest party / Seats Share
239
Largest party / Seats Share
47.80%
Yoshirō Mori
Yoshirō Mori
Election
42nd
Date
25 June 2000
Prime Minister appointed by Emperor(during term)
Yoshirō Mori
Turnout
62.49%
Seats
480
Date ofdissolution (D) /expiration of term (E)
(D) June 2, 2000
Registeredvoters
100,492,328
Largest party / Seats Share
233
Largest party / Seats Share
48.54%
Election
Date
Prime Minister appointed by Emperor(during term)
Turnout
Seats
Date ofdissolution (D) /expiration of term (E)
Registeredvoters
Largest party / Seats Share
Emperor
7th
August 10, 1902
Katsura Tarō
88.39%
376
(E) August 9, 1902
982,868
Rikken Seiyūkai
191
50.79%
Meiji(era)
8th
March 1, 1903
86.17%
(D) December 28, 1902
958,322
175
46.54%
9th
1 March 1904
Katsura Tarō
86.06%
379
(D) December 11, 1903
762,445
133
35.09%
(Saionji Kinmochi)
10th
15 May 1908
Saionji Kinmochi
85.29%
(E) March 27, 1908
1,590,045
187
49.34%
(Katsura Tarō)
(Saionji Kinmochi)
11th
15 May 1912
Saionji Kinmochi
89.58%
381
(E) May 14, 1912
1,506,143
209
54.85%
(Katsura Tarō)
Taishō(era)
(Yamamoto Gonnohyōe)
(Ōkuma Shigenobu)
12th
25 March 1915
Ōkuma Shigenobu
92.13%
(D) December 25, 1914
1,546,411
Rikken Dōshikai
153
40.15%
(Terauchi Masatake)
13th
20 April 1917
Terauchi Masatake
91.92%
(D) January 25, 1917
1,422,126
Rikken Seiyūkai
165
43.30%
(Hara Takashi)
14th
10 May 1920
Hara Takashi
86.73%
464
(D) February 26, 1920
3,069,148
278
59.91%
(Takahashi Korekiyo)
(Katō Tomosaburō)
(Yamamoto Gonnohyōe)
(Kiyoura Keigo)
15th
10 May 1924
Katō Takaaki
91.18%
(D) January 31, 1924
3,288,405
Kenseikai
151
32.54%
(Wakatsuki Reijirō)
(Tanaka Giichi)
Shōwa(era)
16th
20 February 1928
Tanaka Giichi
80.36%
466
(D) January 21, 1928
12,408,678
Rikken Seiyūkai
218
46.78%
(Hamaguchi Osachi)
17th
20 February 1930
Hamaguchi Osachi
83.34%
(D) January 21, 1930
12,812,895
Rikken Minseitō
273
58.58%
(Wakatsuki Reijirō)
(Inukai Tsuyoshi)
18th
20 February 1932
Inukai Tsuyoshi
81.68%
(D) January 21, 1932
13,237,841
Rikken Seiyukai
301
64.59%
(Saitō Makoto)
(Keisuke Okada)
19th
20 February 1936
Kōki Hirota
78.65%
(D) January 21, 1936
14,479,553
Rikken Minseitō
205
43.99%
(Senjūrō Hayashi)
20th
30 April 1937
Senjūrō Hayashi
73.31%
(D) March 31, 1937
14,618,298
179
38.41%
(Fumimaro Konoe)
(Hiranuma Kiichirō)
(Nobuyuki Abe)
(Mitsumasa Yonai)
(Fumimaro Konoe)
(Fumimaro Konoe)
(Hideki Tojo)
21st
30 April 1942
Hideki Tojo
83.16%
(E) April 29, 1942
14,594,287
Imperial Rule Assistance Association
381
81.75%
(Kuniaki Koiso)
(Kantarō Suzuki)
(Kantarō Suzuki)
(Prince Naruhiko Higashikuni)
(Kijūrō Shidehara)
22nd
April 10, 1946
Shigeru Yoshida
72.08%
(D) December 18, 1945
36,878,420
Liberal
141
30.25%
23rd
25 April 1947
Tetsu Katayama
67.95%
(D) March 31, 1947
40,907,493
Socialist
143
30.68%
· List of House of Representatives general elections › 21st century
Junichiro Koizumi
Junichiro Koizumi
Election
43rd
Date
9 November 2003
Prime Minister appointed by Emperor(during term)
Junichiro Koizumi
Turnout
59.86%
Seats
480
Date ofdissolution (D) /expiration of term (E)
(D) 10 October 2003
Registeredvoters
102,306,684
Largest party / Seats Share
Liberal Democratic
Largest party / Seats Share
237
Largest party / Seats Share
49.37%
Emperor
Akihito(Heisei)(era)
Junichiro Koizumi
Junichiro Koizumi
Election
44th
Date
11 September 2005
Prime Minister appointed by Emperor(during term)
Junichiro Koizumi
Turnout
67.51%
Seats
(D) 8 August 2005
Date ofdissolution (D) /expiration of term (E)
103,067,966
Registeredvoters
296
Largest party / Seats Share
61.66%
Yukio Hatoyama
Yukio Hatoyama
Election
45th
Date
30 August 2009
Prime Minister appointed by Emperor(during term)
Yukio Hatoyama
Turnout
69.28%
Seats
(D) 21 July 2009
Date ofdissolution (D) /expiration of term (E)
104,057,361
Registeredvoters
Democratic
Largest party / Seats Share
308
Largest party / Seats Share
64.16%
Shinzo Abe
Shinzo Abe
Election
46th
Date
16 December 2012
Prime Minister appointed by Emperor(during term)
Shinzo Abe
Turnout
59.32%
Seats
(D) 16 November 2012
Date ofdissolution (D) /expiration of term (E)
103,959,866
Registeredvoters
Liberal Democratic
Largest party / Seats Share
294
Largest party / Seats Share
61.25%
52.66%
52.66%
Election
47th
Date
14 December 2014
Prime Minister appointed by Emperor(during term)
52.66%
Turnout
475
Seats
(D) 21 November 2014
Date ofdissolution (D) /expiration of term (E)
104,067,104
Registeredvoters
291
Largest party / Seats Share
61.26%
Shinzo Abe
Shinzo Abe
Election
48th
Date
22 October 2017
Prime Minister appointed by Emperor(during term)
Shinzo Abe
Turnout
53.68%
Seats
465
Date ofdissolution (D) /expiration of term (E)
(D) 28 September 2017
Registeredvoters
106,091,229
Largest party / Seats Share
284
Largest party / Seats Share
61.08%
Fumio Kishida
Fumio Kishida
Election
49th
Date
31 October 2021
Prime Minister appointed by Emperor(during term)
Fumio Kishida
Turnout
55.93%
Seats
(D) 14 October 2021
Date ofdissolution (D) /expiration of term (E)
105,622,758
Registeredvoters
261
Largest party / Seats Share
56.12%
Shigeru Ishiba
Shigeru Ishiba
Election
50th
Date
27 October 2024
Prime Minister appointed by Emperor(during term)
Shigeru Ishiba
Turnout
53.85%
Seats
(D) 9 October 2024
Date ofdissolution (D) /expiration of term (E)
103,880,749
Registeredvoters
191
Largest party / Seats Share
41.08%
Election
Date
Prime Minister appointed by Emperor(during term)
Turnout
Seats
Date ofdissolution (D) /expiration of term (E)
Registeredvoters
Largest party / Seats Share
Emperor
43rd
9 November 2003
Junichiro Koizumi
59.86%
480
(D) 10 October 2003
102,306,684
Liberal Democratic
237
49.37%
Akihito(Heisei)(era)
44th
11 September 2005
Junichiro Koizumi
67.51%
(D) 8 August 2005
103,067,966
296
61.66%
(Shinzo Abe)
(Yasuo Fukuda)
(Tarō Asō)
45th
30 August 2009
Yukio Hatoyama
69.28%
(D) 21 July 2009
104,057,361
Democratic
308
64.16%
(Naoto Kan)
(Yoshihiko Noda)
46th
16 December 2012
Shinzo Abe
59.32%
(D) 16 November 2012
103,959,866
Liberal Democratic
294
61.25%
47th
14 December 2014
52.66%
475
(D) 21 November 2014
104,067,104
291
61.26%
48th
22 October 2017
Shinzo Abe
53.68%
465
(D) 28 September 2017
106,091,229
284
61.08%
(Yoshihide Suga)
Naruhito(Reiwa)(era)
(Fumio Kishida)
49th
31 October 2021
Fumio Kishida
55.93%
(D) 14 October 2021
105,622,758
261
56.12%
(Shigeru Ishiba)
50th
27 October 2024
Shigeru Ishiba
53.85%
(D) 9 October 2024
103,880,749
191
41.08%
(Sanae Takaichi)
· List of House of Councillors regular elections › 20th century
Shōwa(era)
Shōwa(era)
Election
1st
Cabinet
Yoshida I
Prime Minister
Shigeru Yoshida
Date
20 April 1947
Turnout
61.12%
Totalseats
250
Electedseats
250
Termexpirationdate
2 May 1953
Largest party / Seats share
Socialist
Largest party / Seats share
47
Largest party / Seats share
18.80%
Emperor
Shōwa(era)
Election
Cabinet
Prime Minister
Date
Turnout
Totalseats
Electedseats
Termexpirationdate
Largest party / Seats share
Emperor
1st
Yoshida I
Shigeru Yoshida
20 April 1947
61.12%
250
250
2 May 1953
Socialist
47
18.80%
Shōwa(era)
2nd
Yoshida III
4 June 1950
72.19%
125
3 June 1956
Liberal
76
30.40%
3rd
Yoshida IV
24 April 1953
63.18%
2 May 1959
93
37.20%
4th
I. Hatoyama III
Ichirō Hatoyama
8 July 1956
62.11%
7 July 1962
Liberal Democratic
122
48.80%
5th
Kishi II
Nobusuke Kishi
2 June 1959
58.75%
1 June 1965
132
52.80%
6th
Ikeda II
Hayato Ikeda
1 July 1962
68.22%
7 July 1968
142
56.80%
7th
Satō I
Eisaku Satō
4 July 1965
67.02%
1 July 1971
140
55.77%
8th
Satō II
7 July 1968
68.94%
7 July 1974
142
54.80%
9th
Satō III
27 June 1971
59.24%
252
126
10 July 1977
131
52.61%
10th
K. Tanaka II
Kakuei Tanaka
7 July 1974
73.20%
7 July 1980
126
50.40%
11th
T. Fukuda
Takeo Fukuda
10 July 1977
68.49%
9 July 1983
124
49.79%
12th
Ōhira II
Masayoshi Ōhira
22 June 1980
74.54%
7 July 1986
135
54.00%
13th
Nakasone I
Yasuhiro Nakasone
26 June 1983
57.00%
9 July 1989
137
54.36%
14th
Nakasone II (R2)
6 July 1986
71.36%
7 July 1992
143
56.74%
15th
Uno
Sōsuke Uno
23 July 1989
65.02%
252
126
22 July 1995
109
43.25%
Akihito(Heisei)(era)
16th
Miyazawa
Kiichi Miyazawa
26 July 1992
50.72%
25 July 1998
107
42.46%
17th
Murayama
Tomiichi Murayama
23 July 1995
44.52%
22 July 2001
111
44.04%
18th
Hashimoto II (R)
Ryutaro Hashimoto
12 July 1998
58.84%
25 July 2004
103
40.87%
· List of House of Councillors regular elections › 21st century
Akihito(Heisei)(era)
Akihito(Heisei)(era)
Election
19th
Cabinet
Koizumi I
Prime Minister
Junichiro Koizumi
Date
29 July 2001
Turnout
56.44%
Totalseats
247
Electedseats
121
Termexpirationdate
28 July 2007
Majority party / Seats share
Liberal Democratic
Majority party / Seats share
111
Majority party / Seats share
44.93%
Emperor
Akihito(Heisei)(era)
Election
Cabinet
Prime Minister
Date
Turnout
Totalseats
Electedseats
Termexpirationdate
Majority party / Seats share
Emperor
19th
Koizumi I
Junichiro Koizumi
29 July 2001
56.44%
247
121
28 July 2007
Liberal Democratic
111
44.93%
Akihito(Heisei)(era)
20th
Koizumi II
11 July 2004
56.57%
242
25 July 2010
115
47.52%
21st
S. Abe I
Shinzo Abe
29 July 2007
58.64%
28 July 2013
Democratic
109
45.04%
22nd
Kan
Naoto Kan
11 July 2010
57.92%
25 July 2016
106
43.80%
23rd
S. Abe II
Shinzo Abe
21 July 2013
52.61%
28 July 2019
Liberal Democratic
115
47.52%
24th
S. Abe III (R1)
10 July 2016
54.70%
25 July 2022
121
50.00%
25th
S. Abe IV (R1)
21 July 2019
48.80%
245
124
28 July 2025
113
46.12%
Naruhito(Reiwa)(era)
26th
Kishida II
Fumio Kishida
10 July 2022
52.05%
248
25 July 2028
119
47.98%
27th
Ishiba II
Shigeru Ishiba
20 July 2025
58.51%
248
125
28 July 2031
101
40.73%

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