All Floor Crossings

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…

Tom Osborne

2012Notable

Progressive Conservative → LiberalMHANewfoundland

5/5

Osborne, a long-serving PC MHA, left the PC caucus and joined the Liberals, citing dissatisfaction with the party's direction.

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…

Bridget Pastoor

2011

Alberta 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.

Casey, PC MLA for Colchester North, crossed to the Liberals in 2011 after clashing with PC leader Jamie Baillie.

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).

Guy Boutilier

2010

Progressive Conservative → WildroseMLAAlberta

3/5

Boutilier, Alberta PC MLA for Fort McMurray-Wood Buffalo, was ejected from the PC caucus in 2009 for publicly criticizing the government's response to the oilsands housing crisi…

Heather Forsyth

2010Notable

Progressive Conservative → Wildrose AllianceMLAAlberta

3/5

Forsyth, a long-serving PC MLA and former cabinet minister, crossed to the Wildrose Alliance with Rob Anderson over dissatisfaction with PC governance.

Anderson, PC MLA for Airdrie-Chestermere, crossed to the Wildrose Alliance along with Heather Forsyth, citing overspending, broken promises, and democratic reform.

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.

Riedl and Auger, Quebec ADQ MNAs, crossed the floor to join the governing Quebec Liberals under Jean Charest as the ADQ declined.

Blair Wilson

2008Notable

Independent → 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.

Bill Casey

2007Notable

Conservative → IndependentMPNova Scotia

3/5

William David "Bill" Casey, the Conservative MP for Cumberland—Colchester—Musquodoboit Valley in Nova Scotia, was expelled from the Conservative caucus on June 6, 2007, after vo…

Garth Turner

2007Notable

Conservative → LiberalMPOntario

1/5

Turner was expelled from the Conservative caucus in October 2006 for publicly criticizing the party. After sitting as an independent, he joined the Liberals in February 2007.

MacAlpine-Stiles and Stiles, married New Brunswick PC MLAs, both crossed the floor to join the governing Liberals of Shawn Graham.

Joseph R. "Joe" Comuzzi, a Liberal MP from Thunder Bay—Superior North since 1988, was suspended from the Liberal caucus in March 2007 after voting in favour of the Harper Conser…

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…

Peterson, Ontario Liberal MPP for Mississauga South, left the Liberals in March 2007 over policy disagreements and joined the PCs in June 2007.

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…

David Emerson

2006Notable

Liberal → ConservativeMPBritish Columbia

5/5

This is one of the most controversial crossings in Canadian history. Emerson was elected as a Liberal, and just TWO WEEKS later, he crossed to join Stephen Harper's new Conserva…

Branch, New Brunswick Liberal MLA for Nepisiguit, left the Liberal caucus to sit as an independent over policy disagreements with the government.

Malley, New Brunswick PC MLA, left the PC caucus to sit as an independent following disputes with the party leadership.

Belinda Stronach

2005Notable

Conservative → LiberalMPOntario

5/5

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…

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.