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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.
Maguire left the Nova Scotia Liberals and joined the governing Progressive Conservatives.
This is one of the most controversial crossings in Canadian history. Emerson was elected as a Liberal, and just TWO WEEKS later, he crossed to join Stephen Harper's new Conserva…
In one of the most dramatic moments in Canadian parliamentary history, Stronach crossed the floor to join Paul Martin's Liberal cabinet. Her single vote helped save the minority…
Fentie left the Yukon NDP and joined the Yukon Party.
Roch, Manitoba Liberal MLA for Springfield, crossed to the PCs after failing to secure a Liberal nomination for the next election.
Horner was an Alberta Conservative who crossed to join Pierre Trudeau's Liberal cabinet. In Alberta, being a Liberal is almost unthinkable - this was a huge deal.
Greenlay, a Manitoba PC MLA, crossed the floor to join the Liberal-Progressive government of Douglas Campbell, who was a childhood friend. He was immediately appointed Provincia…
Cartwright believed he deserved to be Finance Minister. When Prime Minister Macdonald gave the job to someone else, Cartwright left the party in anger.