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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.
21 crossings
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
Sandra Jansen
2016NotableProg. Conservative → NDPMLAAlberta
3/5
Jansen was a Progressive Conservative who crossed all the way to the left-wing NDP - one of the rarest types of crossing. She cited harassment she experienced during the PC lead…
Changed BeliefsGot Cabinet
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
Ian Donovan
2014Wildrose Alliance → Progressive ConservativeMLAAlberta
1/5
Donovan, Wildrose MLA for Little Bow, crossed to the PCs in November 2014 alongside Kerry Towle.
Switched Sides
Kerry Towle
2014Wildrose Alliance → Progressive ConservativeMLAAlberta
1/5
Towle, Wildrose MLA for Innisfail-Sylvan Lake, crossed to the PCs in November 2014, weeks before Danielle Smith's mass crossing. She was unhappy with Smith's leadership.
Switched Sides
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
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
Guy Boutilier
2010Progressive 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…
Kicked Out
Heather Forsyth
2010NotableProgressive 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.
Stood on Principle
RA
Rob Anderson
2010NotableProgressive Conservative → Wildrose AllianceMLAAlberta
3/5
Anderson, PC MLA for Airdrie-Chestermere, crossed to the Wildrose Alliance along with Heather Forsyth, citing overspending, broken promises, and democratic reform.
Stood on Principle
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
GM
Gary Masyk
2004Progressive Conservative → Alberta AllianceMLAAlberta
0/5
Masyk, Alberta PC MLA for Edmonton-Norwood, crossed the floor to join the Alberta Alliance Party over disagreements with PC governance.
Stood on Principle
Jack Ramsay
2000Reform Party → IndependentMPAlberta
0/5
Jack Ramsay, a Reform Party MP for Crowfoot in Alberta and former RCMP officer, was suspended from the Reform caucus in November 1999 following criminal charges and personal con…
Kicked Out
Janet (Jan) Brown
1996Reform Party → IndependentMPAlberta
0/5
Jan Brown, a Reform Party MP for Calgary Southeast, was suspended from the Reform caucus on May 7, 1996, after clashing repeatedly with the party leadership. Brown had been one …
Kicked Out
AK
Alex Kindy
1990Progressive Conservative → IndependentMPAlberta
0/5
Alex Kindy, a Progressive Conservative MP for Calgary East since 1968, was suspended from the Conservative caucus on April 11, 1990, alongside David Kilgour, for voting against …
Kicked Out
David Kilgour
1990NotableProg. Conservative → IndependentMPAlberta
3/5
Kilgour left the Conservatives over policy disagreements. He later joined the Liberals. Then in 2005, he left the Liberals too - one of only two people to cross the floor twice.
Stood on PrincipleGot Cabinet
WJ
William J. Yurko
1982Progressive Conservative → IndependentMPAlberta
0/5
William Yurko, a Progressive Conservative MP for Edmonton East and former Alberta provincial cabinet minister, broke with his party in January 1982 over fundamental disagreement…
Stood on Principle
SS
Stan Schumacher
1978Progressive Conservative → IndependentMPAlberta
0/5
Stanley Stanford Schumacher, a Conservative MP from Palliser in Alberta, left the PC caucus to sit as an Independent in 1978 over a dispute with party leader Joe Clark. Schumach…
Fought Their Leader
Jack Horner
1977NotableProgressive Conservative → LiberalMPAlberta
4/5
Horner was an Alberta Conservative who crossed to join Pierre Trudeau's Liberal cabinet. In Alberta, being a Liberal is almost unthinkable - this was a huge deal.
Wanted PromotionGot Cabinet
Robert N. Thompson
1968Social Credit → Progressive ConservativeMPAlberta
4/5
Thompson, former national leader of Social Credit, crossed to the PCs after the Social Credit Party fragmented and lost relevance federally.
Changed Beliefs
Bud Olson
1967NotableSocial Credit → LiberalMPAlberta
5/5
Olson, MP for Medicine Hat, left the declining Social Credit Party to join the Liberals under Pierre Trudeau, who offered him a cabinet position.
Wanted PromotionGot Cabinet