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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.
77 crossings
Dallas Brodie
2025BC Conservative → IndependentMLABritish Columbia
0/5
Brodie, BC Conservative MLA, left the party caucus in 2025 amid internal disputes, sitting as an independent.
Kicked Out
TA
Tara Armstrong
2025BC Conservative → IndependentMLABritish Columbia
0/5
Armstrong, BC Conservative MLA, left the party caucus in 2025 amid disagreements with party leadership.
Kicked Out
CS
Claire Samson
2021NotableCoalition Avenir Québec → Conservative Party of QuebecMNAQuebec
0/5
Samson, CAQ MNA for Iberville, was expelled from the CAQ caucus in 2021 after it was revealed she had donated to the Conservative Party of Quebec. She then joined the Conservati…
Kicked Out
Maxime Bernier
2018NotableConservative → People's PartyMPQuebec
0/5
Bernier narrowly lost the Conservative leadership race to Andrew Scheer (by less than 2%). Bitter about the loss, he left to start his own party - the People's Party of Canada -…
Started New Party
JM
Jack MacLaren
2017Progressive Conservative → IndependentMPPOntario
0/5
MacLaren, Ontario PC MPP for Carleton-Mississippi Mills, was expelled from the PC caucus after making offensive comments about francophones. He briefly associated with the Trill…
Kicked Out
EA
Eve Adams
2015NotableConservative → LiberalMPOntario
0/5
Adams, Conservative MP for Mississauga-Brampton South, crossed to the Liberals in February 2015 after being denied a Conservative nomination. She was personally welcomed by Just…
Switched Sides
AB
André Bellavance
2014Bloc Québécois → IndependentMPQuebec
0/5
Bellavance, BQ MP for Richmond-Arthabaska since 2004, left the Bloc to sit as an independent, expressing disillusionment with the party's direction.
Stood on Principle
DS
Danielle Smith + 8 Wildrose MLAs
2014NotableWildrose Party → Progressive ConservativeMLAAlberta
0/5
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…
Switched Sides
JF
Jean-François Fortin
2014Bloc Québécois → Strength in DemocracyMPQuebec
0/5
Fortin left the BQ to co-found the Strength in Democracy (Force et Démocratie) party with Jean-François Larose, seeking a new approach to Quebec nationalism.
Started New Party
Jean-François Larose
2014New Democratic Party → Strength in DemocracyMPQuebec
0/5
Larose, NDP MP for Repentigny, left the NDP to co-found the Strength in Democracy (Force et Démocratie) party with Jean-François Fortin.
Started New Party
Sana Hassainia
2014NotableNDP → IndependentMPQuebec
0/5
Hassainia disagreed with NDP leader Thomas Mulcair's position on the Israeli-Palestinian conflict. She left the party over it.
Stood on Principle
Brent Rathgeber
2013NotableConservative → IndependentMPAlberta
0/5
Rathgeber was a Conservative backbencher who became increasingly frustrated with Stephen Harper's tight control over MPs. He felt MPs were being treated as rubber stamps rather …
Stood on Principle
Dean Del Mastro
2013NotableConservative → IndependentMPOntario
0/5
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…
Kicked Out
KL
Kelly Lamrock
2013Liberal → New Democratic PartyMLANew Brunswick
0/5
Lamrock, New Brunswick Liberal MLA for Fredericton-Fort Nashwaak and former Education Minister, left the Liberals to join the NB NDP, citing a shift in his political views towar…
Changed Beliefs
Maria Mourani
2013NotableBloc Québécois → IndependentMPQuebec
0/5
Mourani left the Bloc and publicly renounced her belief in Quebec sovereignty - a fundamental change of heart. She wanted to join the NDP, but the NDP has a policy against accep…
Changed Beliefs
FR
François Rebello
2012Parti Québécois → Coalition Avenir QuébecMNAQuebec
0/5
Rebello, PQ MNA for La Prairie, left the PQ to join the Coalition Avenir Québec, citing the CAQ's pragmatic approach as more appealing than the PQ's sovereignty focus.
Joined New Party
John van Dongen
2012BC Liberal → BC ConservativeMLABritish Columbia
0/5
Van Dongen, a long-serving BC Liberal MLA, crossed to the BC Conservatives in 2012, citing dissatisfaction with Premier Christy Clark's leadership.
Fought Their Leader
Blair Wilson
2008NotableIndependent → Green PartyMPBritish Columbia
0/5
Wilson had resigned from the Liberal caucus over allegations about his finances. He then joined the Green Party, becoming their first-ever Member of Parliament.
Joined New Party
LT
Louise Thibault
2007Bloc Québécois → IndependentMPQuebec
0/5
Louise Thibault, a Bloc Québécois MP for Rimouski-Neigette—Témiscouata—Les Basques, left the BQ caucus in April 2007 to sit as an Independent. Thibault was elected in the 2004 e…
Fought Their Leader
TP
Tim Peterson
2007Ontario Liberal → Progressive ConservativeMPPOntario
0/5
Peterson, Ontario Liberal MPP for Mississauga South, left the Liberals in March 2007 over policy disagreements and joined the PCs in June 2007.
Switched Sides
FB
Frank Branch
2006Liberal → IndependentMLANew Brunswick
0/5
Branch, New Brunswick Liberal MLA for Nepisiguit, left the Liberal caucus to sit as an independent over policy disagreements with the government.
Stood on Principle
MM
Michael Malley
2006Progressive Conservative → IndependentMLANew Brunswick
0/5
Malley, New Brunswick PC MLA, left the PC caucus to sit as an independent following disputes with the party leadership.
Fought Their Leader
BD
Bev Desjarlais
2005New Democratic Party → IndependentMPManitoba
0/5
Desjarlais, NDP MP for Churchill, voted against same-sex marriage in defiance of her party's position. She lost her NDP nomination and sat as an independent.
Kicked Out
David Kilgour (2nd crossing)
2005NotableLiberal → IndependentMPAlberta
0/5
Kilgour left the Liberal caucus in 2005, citing the sponsorship scandal and disagreements on Sudan policy. This was his second floor crossing — he had previously crossed from th…
Stood on Principle