Loading…
Loading…
| Year | Name | Direction | From/To | Category |
|---|---|---|---|---|
| 1872 | Alfred Gilpin Jones | Lost | to Liberal | Changed Beliefs |
| 1893 | Dalton McCarthy | Gained | from Conservative | Stood on Principle |
| 1900 | Henri Bourassa | Gained | from Liberal | Stood on Principle |
| 1919 | George William Andrews | Gained | from Liberal-Unionist | Stood on Principle |
| 1925 | Alan Webster Neill | Gained | from Progressive | Stood on Principle |
| 1937 | James Samuel Taylor | Gained | from Co-operative Commonwealth Federation | Kicked Out |
| 1955 | Ross Thatcher | Gained | from CCF (socialist party) | Changed Beliefs |
| 1965 | Rémi Paul | Gained | from Progressive Conservative | Fought Their Leader |
| 1965 | Léon Balcer | Gained | from Progressive Conservative | Stood on Principle |
| 1966 | Gilles Grégoire | Gained | from Ralliement des créditistes | Fought Their Leader |
| 1967 | René Lévesque | Gained | from Quebec Liberal Party | Started New Party |
| 1968 | Lucien Lamoureux | Gained | from Liberal | Stood on Principle |
| 1971 | Paul Hellyer | Gained | from Liberal | Changed Beliefs |
| 1972 | Roch La Salle | Gained | from Progressive Conservative | Fought Their Leader |
| 1972 | Paul Hellyer | Lost | to Progressive Conservative | Changed Beliefs |
| 1977 | Gilbert Rondeau | Gained | from Social Credit | Kicked Out |
| 1978 | René Matte | Gained | from Ralliement des créditistes | Kicked Out |
| 1978 | James Armstrong Richardson | Gained | from Liberal | Stood on Principle |
| 1978 | Stan Schumacher | Gained | from Progressive Conservative | Fought Their Leader |
| 1982 | William J. Yurko | Gained | from Progressive Conservative | Stood on Principle |
| 1986 | Robert Toupin | Gained | from Prog. Conservative | Rejected by Everyone |
| 1988 | Suzanne Blais-Grenier | Gained | from Progressive Conservative | Kicked Out |
| 1989 | Richard Grisé | Gained | from Progressive Conservative | Kicked Out |
| 1990 | David Kilgour | Gained | from Prog. Conservative | Stood on Principle |
| 1990 | Alex Kindy | Gained | from Progressive Conservative | Kicked Out |
| 1990 | Gilles Duceppe | Lost | to Bloc Québécois | Started New Party |
| 1993 | Gilles Bernier | Gained | from Progressive Conservative | Kicked Out |
| 1993 | Dennis Drainville | Gained | from Ontario NDP | Stood on Principle |
| 1993 | Denis Pronovost | Gained | from Progressive Conservative | Fought Their Leader |
| 1994 | Jag Bhaduria | Gained | from Liberal | Kicked Out |
| 1996 | John Nunziata | Gained | from Liberal | Stood on Principle |
| 1996 | Janet (Jan) Brown | Gained | from Reform Party | Kicked Out |
| 1997 | Jack Gooshen | Gained | from Progressive Conservative | Stood on Principle |
| 1997 | Bernard St-Laurent | Gained | from Bloc Québécois | Fought Their Leader |
| 1999 | Réjean Lefebvre | Gained | from Bloc Québécois | Kicked Out |
| 2000 | Jake E. Hoeppner | Gained | from Reform Party | Kicked Out |
| 2000 | Jack Ramsay | Gained | from Reform Party | Kicked Out |
| 2001 | Jean-Guy Carignan | Gained | from Liberal | Fought Their Leader |
| 2002 | Jim Pankiw | Gained | from Democratic Representative Caucus | Kicked Out |
| 2002 | Ghislain Lebel | Gained | from Bloc Québécois | Fought Their Leader |
| 2003 | Pierre Brien | Gained | from Bloc Québécois | Changed Beliefs |
| 2004 | John Herron | Gained | from Progressive Conservative | Stood on Principle |
| 2004 | André Bachand | Gained | from Progressive Conservative | Stood on Principle |
| 2004 | Larry Spencer | Gained | from Canadian Alliance | Kicked Out |
| 2004 | Chuck Cadman | Gained | from Conservative | Kicked Out |
| 2004 | Carolyn Parrish | Gained | from Liberal | Kicked Out |
| 2005 | Bev Desjarlais | Gained | from New Democratic Party | Kicked Out |
| 2005 | Pat O'Brien | Gained | from Liberal | Stood on Principle |
| 2005 | David Kilgour (2nd crossing) | Gained | from Liberal | Stood on Principle |
| 2006 | Michael Malley | Gained | from Progressive Conservative | Fought Their Leader |
| 2006 | Frank Branch | Gained | from Liberal | Stood on Principle |
| 2007 | Louise Thibault | Gained | from Bloc Québécois | Fought Their Leader |
| 2007 | Bill Casey | Gained | from Conservative | Stood on Principle |
| 2008 | Blair Wilson | Lost | to Green Party | Joined New Party |
| 2009 | Éric Caire and Marc Picard | Gained | from ADQ | Joined New Party |
| 2010 | Blair Lekstrom | Gained | from BC Liberal | Stood on Principle |
| 2011 | Beaudoin, Curzi, Lapointe, Aussant, Charette, Gauvreau | Gained | from Parti Québécois | Fought Their Leader |
| 2013 | Maria Mourani | Gained | from Bloc Québécois | Changed Beliefs |
| 2013 | Brent Rathgeber | Gained | from Conservative | Stood on Principle |
| 2013 | Dean Del Mastro | Gained | from Conservative | Kicked Out |
| 2014 | Sana Hassainia | Gained | from NDP | Stood on Principle |
| 2014 | André Bellavance | Gained | from Bloc Québécois | Stood on Principle |
| 2017 | Jack MacLaren | Gained | from Progressive Conservative | Kicked Out |
| 2019 | Catherine Fournier | Gained | from Parti Québécois | Stood on Principle |
| 2025 | Dallas Brodie | Gained | from BC Conservative | Kicked Out |
| 2025 | Tara Armstrong | Gained | from BC Conservative | Kicked Out |