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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.
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 …
Lévesque believed Quebec should become its own country. The Liberals disagreed. So he left and eventually founded the Parti Québécois.
Rémi Paul, a Progressive Conservative MP from Quebec, left the PC caucus around 1965 as part of the broader Quebec Conservative revolt against John Diefenbaker's leadership. Lik…
Ouellet and Girouard, Social Credit MPs from Quebec, left the fragmenting Social Credit party to join the Progressive Conservatives.
In late 1944, when Mackenzie King finally implemented limited conscription for overseas service (the "Zombies" crisis), several Quebec Liberal MPs broke with the party to sit as…
David-Arthur Lafortune, a Quebec Liberal MP, broke from the Liberal caucus to sit as an Independent Liberal around 1909, reflecting internal tensions within the Quebec Liberal c…
D'Alton McCarthy, one of the most prominent Conservative MPs and a close ally of John A. Macdonald, broke with the Conservative Party over the Manitoba Schools Question — whethe…
Amyot, Conservative MP for Bellechasse, left the Conservative caucus to sit as a Nationalist, protesting the execution of Louis Riel and the government's treatment of French Can…