Maximum representation!MPs!Notes| Anti-Confederation Party | 1867 | 1867 | 1870 | 1870 | 18 (1867) | William Hallett Ray, Archibald McLelan, Alfred William Savary, Alfred Gilpin Jones, Patrick Power, Joseph Howe, William Henry Chipman, Edmund Mortimer McDonald, James Fraser Forbes, Thomas Coffin, Thomas Killam, Hugh McDonald, James Charles McKeagney, Stewart Campbell, Hugh Cameron, James William Carmichael, William Joseph Croke, William Ross | |
| Bloc populaire | 1942 | 1945 | 1947 | 1947 | 4 (1943) | Joseph-Armand Choquette, Émmanuel d'Anjou, Pierre Gauthier, René Hamel, Édouard Lacroix, Maxime Raymond | |
| Bloc Québécois | 1991 | 1993 | N/A | N/A | 54 (1993) | | |
| Canadian Alliance | 2000 | 2000 | 2003 | 2003 | 66 (2000) | | |
| 1921 | 1940 | 1949 | N/A | 1 (1949) | | |
| Conservative Party of Canada (1867–1942) | 1867 | 1867 | 1942 | 1942 | 152 (1917) | | |
| Conservative Party of Canada | 2003 | 2003 | N/A | N/A | 166 (2011) | | |
| Co-operative Commonwealth Federation | 1932 | 1932 | 2018 | 1961 | 28 (1945) | | Erin Weir was Expelled from the NDP caucus following investigation into allegations of harassment, and subsequently changed his affiliation to the CCF.Although the CCF was dissolved in 1961, the House of Commons does not require that a party be registered with Elections Canada for the purposes of an MP declaring affiliation.[1] |
| Green Party of Canada | 1983 | 2008 | N/A | N/A | 3 (2019) | Bruce Hyer, Elizabeth May, Mike Morrice, Paul Manly, Blair Wilson, Jenica Atwin | |
| 1958 | 1960 | 1961 | 1961 | 1 (1960) | Walter Pitman | |
| New Democratic Party | 1961 | 1961 | N/A | N/A | 103 (2011) | | |
| People's Party of Canada | 2018 | 2018 | 2019 | 2019 | 1 (2018) | Maxime Bernier | Defected from the Conservatives |
| Ralliement créditiste | 1939 | 1965 | 1971 | 1971 | 14 (1968) | | |
| Social Credit Party of Canada | 1935 | 1935 | 1979 | 1993 | 30 (1962) | | | |
