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Explore every documented floor-crossing in Canadian political history.
Gladu was the fourth Conservative MP to cross the floor to the Liberals during the 45th Parliament. A veteran MP first elected in 2015, she joined Prime Minister Mark Carney's g…
Ma was the second Conservative MP to cross to the Liberals. His crossing was especially significant because it brought the Liberals within just one seat of a majority government…
Simard resigned from Doug Ford's Ontario PC caucus because the government cut funding for Franco-Ontarian services - including eliminating the French Language Commissioner. She …
Alleslev left the governing Liberals for the opposition Conservatives, citing concerns about economic and defence policy. This is unusual - most people cross TO the governing pa…
Del Mastro had been one of PM Harper's closest allies - his parliamentary secretary. He left caucus after being charged by Elections Canada with overspending on his campaign and…
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…
Parrish was expelled from the Liberal caucus after publicly insulting Prime Minister Paul Martin and famously stomping on a George W. Bush doll on a comedy TV show.
In 1993, the Liberals won a huge election partly by promising to eliminate the GST (sales tax). Once in power, they broke that promise. Nunziata voted against his own party's bu…
Hellyer left the Liberals, tried to start his own party, joined the Conservatives, then went back to the Liberals, then started another party. He crossed the floor more times th…
Another Liberal who supported conscription during WWI and crossed the floor.
Cartwright believed he deserved to be Finance Minister. When Prime Minister Macdonald gave the job to someone else, Cartwright left the party in anger.