| Party | Abbr. | Leader(s) | Ideology | National Diet | Governors |
| Representatives | Councillors |
| | | Liberal Democratic Party 自由民主党 Jiyū Minshu-tō | LDP 自民党 Jimin-tō | Sanae Takaichi | Conservatism Japanese nationalism | 316 / 465 | 101 / 248 | 3 / 47 |
| | | Japan Innovation Party 日本維新の会 Nippon Ishin no Kai | JIP 維新 Ishin | Hirofumi Yoshimura Fumitake Fujita | Libertarian conservatism Populism | 36 / 465 | 19 / 248 | 2 / 47 |
| | | Democratic Party For the People 国民民主党 Kokumin Minshu-tō | DPP 国民 Kokumin | Yuichiro Tamaki | Conservatism Populism | 28 / 465 | 25 / 248 | 1 / 47 |
| | | Centrist Reform Alliance 中道改革連合 Chūdō Kaikaku Rengō | CRA 中道 Chūdō | Junya Ogawa | Centrism | 49 / 465 | 0 / 248 | 0 / 47 |
| | | Constitutional Democratic Party 立憲民主党 Rikken Minshu-tō | CDP 立憲 Rikken | Shunichi Mizuoka | Liberalism Social liberalism | 0 / 465 | 39 / 248 | 0 / 47 |
| | | Sanseitō 参政党 Sanseitō | DIY 参政党 Sanseitō | Sohei Kamiya | Right-wing populism Ultraconservatism | 15 / 465 | 15 / 248 | 0 / 47 |
| | | Komeito 公明党 Kōmeitō | NKP 公明 Kōmei | Toshiko Takeya | Buddhist democracy Social conservatism | 0 / 465 | 21 / 248 | 0 / 47 |
| | | Team Mirai チームみらい Chīmu-Mirai | Mirai みらい Mirai | Takahiro Anno | E-democracy | 11 / 465 | 1 / 248 | 0 / 47 |
| | | Japanese Communist Party 日本共産党 Nihon Kyōsan-tō | JCP 共産党 Kyōsan-tō | Tomoko Tamura | Communism Progressivism | 4 / 465 | 7 / 248 | 0 / 47 |
| | | Reiwa Shinsengumi れいわ新選組 Reiwa Shinsengumi | れいわ Reiwa | Mari Kushibuchi Akiko Oishi Taro Yamamoto | Progressivism Left-wing populism | 1 / 465 | 5 / 248 | 0 / 47 |
| | | Conservative Party of Japan 日本保守党 Nippon Hoshutō | CPJ 保守党 Hoshu-tō | Naoki Hyakuta | Japanese ultranationalism Right-wing populism | 0 / 465 | 2 / 248 | 0 / 47 |
| | | Social Democratic Party 社会民主党 Shakai Minshu-tō | SDP 社民党 Shamin-tō | Mizuho Fukushima | Social democracy Progressivism | 0 / 465 | 2 / 248 | 0 / 47 |