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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.
66 crossings
Maïté Blanchette Vézina
2026NotableCoalition Avenir Québec → Conservative Party of QuebecMNAQuebec
2/5
Blanchette Vézina, CAQ MNA and former cabinet minister, crossed to the Conservative Party of Quebec in 2026.
Changed Beliefs
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
CF
Catherine Fournier
2019NotableParti Québécois → IndependentMNAQuebec
2/5
Fournier, PQ MNA for Marie-Victorin, left the PQ to sit as an independent, citing the party's insufficient commitment to Quebec sovereignty and its failure to modernize.
Stood on Principle
7B
7 Bloc Québécois MPs (Québec debout crisis)
2018NotableBloc Québécois → Independent / Québec deboutMPQuebec
2/5
On February 28, 2018, seven of the Bloc Québécois's ten MPs left the party following leader Martine Ouellet's defeat in a leadership review referendum. The departing MPs — Miche…
Fought Their Leader
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
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
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
CP
Claude Patry
2013New Democratic Party → Bloc QuébécoisMPQuebec
1/5
Patry, NDP MP for Jonquière-Alma, crossed to the Bloc Québécois in February 2013, saying he could better serve his constituents and Quebec national interests with the BQ.
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
LS
Lise St-Denis
2012NotableNew Democratic Party → LiberalMPQuebec
1/5
St-Denis, NDP MP for Saint-Maurice-Champlain, crossed to the Liberals in January 2012, just months after the NDP's historic Quebec sweep, saying she had always been a Liberal at…
Changed Beliefs
BC
Beaudoin, Curzi, Lapointe, Aussant, Charette, Gauvreau
2011NotableParti Québécois → IndependentMNAQuebec
1/5
Six PQ MNAs — Louise Beaudoin, Pierre Curzi, Lisette Lapointe, Jean-Martin Aussant, Benoit Charette, and René Gauvreau — left the PQ to sit as independents, citing deep dissatis…
Fought Their Leader
ÉC
Éric Caire and Marc Picard
2009NotableADQ → IndependentMNAQuebec
4/5
Caire and Picard, Quebec ADQ MNAs, left the ADQ to sit as independents. They were among the founding members of the Coalition Avenir Québec when it formed in 2011.
Joined New PartyGot Cabinet
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
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
AB
André Bachand
2004NotableProgressive Conservative → IndependentMPQuebec
0/5
André Bachand, a Progressive Conservative MP for Richmond—Arthabaska since 1997, refused to join the newly merged Conservative Party of Canada on February 2, 2004, choosing inst…
Stood on Principle
Pierre Brien
2003Bloc Québécois → IndependentMPQuebec
0/5
Brien, Bloc Québécois MP for Témiscamingue, left the BQ to sit as an independent, expressing waning interest in the sovereignist cause.
Changed Beliefs
RL
Robert Lanctôt
2003Bloc Québécois → LiberalMPQuebec
0/5
Lanctôt, Bloc Québécois MP for Châteauguay, crossed to the Liberals in late 2003, joining the Paul Martin government.
Switched Sides
GL
Ghislain Lebel
2002Bloc Québécois → IndependentMPQuebec
0/5
Lebel, Bloc Québécois MP for Chambly, left the BQ caucus to sit as an independent over disagreements with the party leadership.
Fought Their Leader
JC
Jean-Guy Carignan
2001Liberal → IndependentMPQuebec
1/5
Carignan, a Liberal senator from Quebec, left the Liberal caucus to sit as an independent in the Senate over policy disagreements.
Fought Their Leader
AH
André Harvey
2000Progressive Conservative → LiberalMPQuebec
3/5
Harvey crossed from the PCs to the Liberals in 2000, dissatisfied with the party's direction under Joe Clark.
Switched Sides
DP
David Price
2000Progressive Conservative → LiberalMPQuebec
4/5
Price, PC MP for Compton-Stanstead, crossed to the Liberals along with several other Quebec PCs in 2000.
Switched Sides