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All Floor Crossings
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.
12 crossings
Lori Idlout
2026NotableNew Democratic Party → LiberalMPNunavut
3/5
Idlout, NDP MP for Nunavut, crossed to the Liberals in early 2026, joining the governing party to better advocate for Inuit and northern issues from within government.
Joined Government
Marilyn Gladu
2026NotableConservative → LiberalMPOntario
3/5
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…
Joined Government
Matt Jeneroux
2026NotableConservative → LiberalMPAlberta
4/5
Jeneroux was the third Conservative to join the Liberals. He represents Edmonton-Riverbend - deep in Alberta Conservative country. An Alberta Conservative joining the Liberals i…
Joined Government
Chris d'Entremont
2025NotableConservative → LiberalMPNova Scotia
4/5
D'Entremont was a Conservative MP from Nova Scotia who crossed the floor to join Prime Minister Mark Carney's Liberal government. He was the first of three Conservative MPs to m…
Joined Government
MM
Michael Ma
2025NotableConservative → LiberalMPOntario
5/5
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…
Joined Government
FT
Fred Tilley
2024Liberal → Progressive ConservativeMLANova Scotia
4/5
Tilley, Liberal MLA for Northside-Westmount, crossed to the PCs in 2024, joining the governing party.
Joined Government
Bridget Pastoor
2011Alberta Liberal → Progressive ConservativeMLAAlberta
3/5
Pastoor, Alberta Liberal MLA for Lethbridge-East, left the Liberals and crossed to the PCs under new leader Alison Redford, who she felt represented a more progressive direction.
Joined Government
AR
André Riedl and Pierre-Michel Auger
2008ADQ → Quebec LiberalMNAQuebec
1/5
Riedl and Auger, Quebec ADQ MNAs, crossed the floor to join the governing Quebec Liberals under Jean Charest as the ADQ declined.
Joined Government
JM
Jim Melenchuk and Ron Osika
2001NotableSaskatchewan Liberal → Saskatchewan NDPMLASaskatchewan
4/5
Melenchuk and Osika, the last two Saskatchewan Liberal MLAs, crossed to the governing NDP, effectively ending the Saskatchewan Liberals as a legislative force.
Joined GovernmentGot Cabinet
GW
Gordon Wilson
1999NotableProgressive Democratic Alliance → BC NDPMLABritish Columbia
4/5
Wilson, PDA MLA and former BC Liberal leader, crossed to the governing BC NDP under Premier Ujjal Dosanjh, receiving a cabinet appointment.
Joined GovernmentGot Cabinet
CA
Charles Agar
1929Progressive → LiberalMLASaskatchewan
2/5
Agar, Progressive MLA in Saskatchewan, crossed to the governing Liberals as the Progressive movement declined on the prairies.
Joined Government
WG
William George Baker
1925Saskatchewan Labour → LiberalMLASaskatchewan
2/5
Baker, Saskatchewan Labour MLA, crossed to the Liberals, joining the governing party.
Joined Government