| Party | Riding | MP | First elected | Defeated by | Party |
| █ Progressive Conservative | Burin—St. George's | Joe Price | 1984 | Roger Simmons | █ Liberal |
| █ Progressive Conservative | Cardigan | Pat Binns | 1984 | Lawrence MacAulay | █ Liberal |
| █ Progressive Conservative | Charlottetown | Thomas McMillan | 1979 | George Proud | █ Liberal |
| █ Progressive Conservative | Cape Breton Highlands—Canso | Lawrence O'Neil | 1984 | Francis LeBlanc | █ Liberal |
| █ Progressive Conservative | Dartmouth | Michael Forrestall | 1965 | Ron MacDonald | █ Liberal |
| █ Progressive Conservative | Halifax | Stewart McInnes | 1984 | Mary Clancy | █ Liberal |
| █ Progressive Conservative | South West Nova | Gerald Comeau | 1984 | Coline Campbell | █ Liberal |
| █ Progressive Conservative | Miramichi | Bud Jardine | 1984 | Maurice Dionne | █ Liberal |
| █ Progressive Conservative | Moncton | Dennis Cochrane | 1984 | George Rideout | █ Liberal |
| █ Progressive Conservative | Restigouche—Chaleur | Al Girard | 1984 | Guy Arseneault | █ Liberal |
| █ Progressive Conservative | Gatineau—La Lièvre | Claudy Mailly | 1984 | Mark Assad | █ Liberal |
| █ Progressive Conservative | Lasalle (contested LaSalle—Émard) | Claude Lanthier | 1984 | Paul Martin | █ Liberal |
| █ Progressive Conservative | Charlevoix (contested Laurier—Sainte-Marie) | Charles Hamelin | 1984 | Jean-Claude Malepart | █ Liberal |
| █ Progressive Conservative | Essex-Kent | James Eber Caldwell | 1984 | Jerry Pickard | █ Liberal |
| █ Progressive Conservative | Etobicoke North | Bob Pennock | 1984 | Roy MacLaren | █ Liberal |
| █ Progressive Conservative | Haldimand—Norfolk | Bud Bradley | 1979 | Bob Speller | █ Liberal |
| █ Progressive Conservative | Hamilton West | Peter Peterson | 1984 | Stan Keyes | █ Liberal |
| █ Progressive Conservative | Kent | Elliott Hardey | 1984 | Rex Crawford | █ Liberal |
| █ Progressive Conservative | Kingston and the Islands | Flora MacDonald | 1972 | Peter Milliken | █ Liberal |
| █ Progressive Conservative | Lambton—Middlesex | Sidney Fraleigh | 1984 | Ralph Ferguson | █ Liberal |
| █ Progressive Conservative | Leeds—Grenville | Jennifer Cossitt | 1982 by-election | Jim Jordan | █ Liberal |
| █ Progressive Conservative | London East | Jim Jepson | 1984 | Joe Fontana | █ Liberal |
| █ Progressive Conservative | Nepean—Carleton (contested Nepean) | William Tupper | 1984 | Beryl Gaffney | █ Liberal |
| █ Progressive Conservative | Nipissing | Moe Mantha Sr. | 1984 | Bob Wood | █ Liberal |
| █ Progressive Conservative | Ottawa—Carleton (contested Ottawa South) | Barry Turner | 1984 | John Manley | █ Liberal |
| █ Progressive Conservative | Ottawa West | David Daubney | 1984 | Marlene Catterall | █ Liberal |
| █ Progressive Conservative | Parkdale—High Park | Andrew Witer | 1984 | Jesse Flis | █ Liberal |
| █ Progressive Conservative | Sault Ste. Marie | Jim Kelleher | 1984 | Steve Butland | █ New Democratic |
| █ Progressive Conservative | Scarborough West | Reg Stackhouse | 1984 | Tom Wappel | █ Liberal |
| █ Progressive Conservative | York—Scarborough (contested Scarborough—Agincourt) | Paul McCrossan | 1984 | Jim Karygiannis | █ Liberal |
| █ Progressive Conservative | Timmins—Chapleau | Aurèle Gervais | 1984 | Cid Samson | █ New Democratic |
| █ Progressive Conservative | Welland (contested Welland—St. Catharines—Thorold) | Allan Pietz | 1984 | Gilbert Parent | █ Liberal |
| █ Progressive Conservative | Willowdale | John Oostrom | 1984 | Jim Peterson | █ Liberal |
| █ Progressive Conservative | Saint Boniface | Léo Duguay | 1984 | Ron Duhamel | █ Liberal |
| █ Progressive Conservative | Mackenzie | Jack Scowen | 1984 | Vic Althouse | █ New Democratic |
| █ Progressive Conservative | Saskatoon West (contested Saskatoon—Clark's Crossing) | Ray Hnatyshyn | 1974 | Chris Axworthy | █ New Democratic |
| █ Progressive Conservative | The Battlefords—Meadow Lake | John Kenneth Gormley | 1984 | Len Taylor | █ New Democratic |
| █ Progressive Conservative | Edmonton East | William Lesick | 1984 | Ross Harvey | █ New Democratic |
| █ Progressive Conservative | Kootenay East | Stan Graham | 1984 | Sid Parker | █ New Democratic |
| █ Progressive Conservative | Kootenay West (contested Kootenay West—Revelstoke) | Robert Brisco | 1984 (1974) | Lyle Kristiansen | █ New Democratic |
| █ Progressive Conservative | Mission—Port Moody (contested Mission—Coquitlam) | Gerry St. Germain | 1983 by-election | Joy Langan | █ New Democratic |
| █ Progressive Conservative | Nanaimo—Alberni (contested Nanaimo—Cowichan) | Ted Schellenberg | 1984 | David Stupich | █ New Democratic |
| █ Progressive Conservative | Okanagan—Similkameen (contested Okanagan—Similkameen—Merritt) | Fred King | 1979 | Jack Whittaker | █ New Democratic |
| █ Progressive Conservative | Esquimalt—Saanich (contested Saanich—Gulf Islands) | Patrick Crofton | 1984 | Lynn Hunter | █ New Democratic |
| █ Progressive Conservative | Western Arctic | Dave Nickerson | 1984 | Ethel Blondin | █ Liberal |
| █ New Democratic | St. John's East | Jack Harris | 1987 by-election | Ross Reid | █ Progressive Conservative |
| █ New Democratic | Broadview—Greenwood | Lynn McDonald | 1982 by-election | Dennis Mills | █ Liberal |
| █ New Democratic | Hamilton Mountain | Marion Dewar | 1987 by-election | Beth Phinney | █ Liberal |
| █ New Democratic | Kenora—Rainy River | John Edmund Parry | 1984 | Bob Nault | █ Liberal |