All Floor Crossings

Maïté Blanchette Vézina

2026Notable

Coalition 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.

As BC United collapsed, seven more MLAs followed Banman to the BC Conservatives throughout 2024.

Bruce Banman

2023Notable

BC United → BC ConservativeMLABritish Columbia

2/5

Banman was the first of many MLAs to leave BC United (formerly BC Liberals) for the surging BC Conservatives. BC United was losing support rapidly as the right consolidated arou…

Jenica Atwin

2021Notable

Green Party → LiberalMPNew Brunswick

2/5

Atwin left the Green Party during a period of internal chaos, partly over how leader Annamie Paul handled the Israel-Palestine debate. The Green Party was tearing itself apart.

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.

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…

Leona Alleslev

2018Notable

Liberal → ConservativeMPOntario

2/5

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…

Perry, PEI PC MLA for Tignish-Palmer Road, left the PCs and joined the governing PEI Liberals.

Blair Lekstrom

2010

BC Liberal → IndependentMLABritish Columbia

2/5

Lekstrom, BC Liberal MLA for Peace River South and former cabinet minister, left the BC Liberal caucus to protest the party's implementation of the Harmonized Sales Tax (HST).

Khan, Liberal MP for Mississauga-Streetsville, crossed to the Conservatives in January 2007 after Prime Minister Harper appointed him as special adviser on Middle East and South…

Chuck Cadman

2004Notable

Conservative → IndependentMPBritish Columbia

2/5

Chuck Cadman, the Conservative MP for Surrey North and a well-known victims' rights advocate whose teenage son Jesse had been murdered in 1992, lost the Conservative Party nomin…

Four Social Credit MLAs left the collapsing party to join the Reform Party of BC as Social Credit became unelectable provincially after years of scandal.

Jean Lapierre

1990Notable

Liberal → Bloc QuébécoisMPQuebec

2/5

Lapierre left the Liberals to co-found the Bloc Québécois with Lucien Bouchard after the failure of the Meech Lake Accord, driven by Quebec nationalist sentiment.

Lucien Bouchard

1990Notable

Prog. Conservative → Bloc QuébécoisMPQuebec

2/5

Bouchard was a cabinet minister under PM Mulroney. When the Meech Lake Accord (a constitutional deal meant to bring Quebec into the constitution) failed, Bouchard left the party…

Al Passarell

1985

NDP → Social CreditMLABritish Columbia

2/5

Passarell, NDP MLA for Atlin who had defeated Frank Calder, crossed to Social Credit in 1985.

Richard Janelle, one of the last Social Credit MPs, crossed the floor to join the Progressive Conservative Party in 1979 as it became clear that Social Credit had no future in f…

Édouard Lacroix

1943

Liberal → Bloc populaire canadienMPQuebec

2/5

Édouard Lacroix, a wealthy Quebec lumber baron and Liberal MP, joined Maxime Raymond's Bloc populaire canadien in 1943, providing the fledgling party with crucial financial back…

Agar, Progressive MLA in Saskatchewan, crossed to the governing Liberals as the Progressive movement declined on the prairies.

Baker, Saskatchewan Labour MLA, crossed to the Liberals, joining the governing party.

Hammell, Progressive MP for Muskoka, rejoined the Liberal Party as the Progressive movement began fracturing.

William Stevens Fielding

1917Notable

Liberal → Liberal-UnionistMPNova Scotia

2/5

During World War I, the government wanted to force men to fight overseas (conscription). Fielding, a senior Liberal, supported conscription even though his party leader Wilfrid …

Louis-Joseph Papineau

1911

Liberal → ConservativeMPQuebec

2/5

Papineau, Liberal MP since 1908, ran and was re-elected as a Conservative in the 1911 election. He later reversed course in 1917, leaving the Conservatives to oppose conscriptio…

John Wallace, a Liberal MP from Ontario, crossed the floor to join the Liberal-Conservative Party in 1883. Like several Ontario MPs of the era, Wallace was attracted by John A. …

Samuel McDonnell

1874

Conservative → LiberalMPNova Scotia

2/5

McDonnell, Conservative MP from Inverness, crossed to the Liberals in the wake of the Pacific Scandal.