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Every documented case of a Canadian MP, MPP, MLA, MNA, or MHA switching parties — federal and provincial, 1867 to present. Filter by level, province, or category.
On December 17, 2014, Wildrose Party leader Danielle Smith led nine of the party's seventeen MLAs across the floor of the Alberta Legislature to join the governing Progressive C…
Perry, PEI PC MLA for Tignish-Palmer Road, left the PCs and joined the governing PEI Liberals.
MacAlpine-Stiles and Stiles, married New Brunswick PC MLAs, both crossed the floor to join the governing Liberals of Shawn Graham.
Peterson, Ontario Liberal MPP for Mississauga South, left the Liberals in March 2007 over policy disagreements and joined the PCs in June 2007.
Lanctôt, Bloc Québécois MP for Châteauguay, crossed to the Liberals in late 2003, joining the Paul Martin government.
Jim Jones, a Progressive Conservative MP for Markham in Ontario, defected to the newly formed Canadian Alliance in September 2000. Jones had been expelled from the PC caucus in …
Bill Matthews, a Progressive Conservative MP for Burin—St. George's in Newfoundland, crossed to the Liberal Party in August 1999. Matthews had been elected as a PC in 1997 and w…
Belanger, Saskatchewan Liberal MLA for Athabasca, crossed to the governing NDP, joining the party he felt better served his northern riding's interests.
Neufeld left the Reform Party of BC to join the BC Liberals, the new dominant centre-right party, as Reform faded provincially.
McPherson, Saskatchewan NDP MLA, left the NDP to join the Liberals.
Passarell, NDP MLA for Atlin who had defeated Frank Calder, crossed to Social Credit in 1985.
Ralph Wesley Stewart, a Liberal MP from British Columbia, crossed the floor to join the Progressive Conservative Party in 1979. Stewart's crossing came during a period when the …
Jacques Lavoie, a Progressive Conservative MP from Quebec, crossed the floor to join the Liberal Party in 1977. His switch came during a period of intense political flux in Queb…
Calder was the first Indigenous person elected to any legislature in Canada, serving 26 years as a CCF/NDP member. He crossed to Social Credit, the governing party.
Ouellet and Girouard, Social Credit MPs from Quebec, left the fragmenting Social Credit party to join the Progressive Conservatives.
Rolston, a BC Progressive Conservative MLA, crossed the floor to join W.A.C. Bennett's new Social Credit government.
Papineau, Liberal MP since 1908, ran and was re-elected as a Conservative in the 1911 election. He later reversed course in 1917, leaving the Conservatives to oppose conscriptio…
James Domville, a Conservative MP from Kings County, New Brunswick, and former militia colonel, switched to the Liberal Party around 1896 as the Conservative coalition showed si…
Five Quebec Liberal MLAs — Alexandre Chauveau, Edmund James Flynn, Louis Napoléon Fortin, Étienne-Théodore Pâquet, and Ernest Racicot — crossed the floor to the Conservatives in…