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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.
14 crossings
Chris d'Entremont
2025NotableConservative → LiberalMPNova Scotia
4/5
D'Entremont was a Conservative MP from Nova Scotia who crossed the floor to join Prime Minister Mark Carney's Liberal government. He was the first of three Conservative MPs to m…
Joined Government
Brendan Maguire
2024Liberal → Prog. ConservativeMLANova Scotia
4/5
Maguire left the Nova Scotia Liberals and joined the governing Progressive Conservatives.
Wanted PromotionGot Cabinet
FT
Fred Tilley
2024Liberal → Progressive ConservativeMLANova Scotia
4/5
Tilley, Liberal MLA for Northside-Westmount, crossed to the PCs in 2024, joining the governing party.
Joined Government
KC
Karen Casey
2011NotableProgressive Conservative → LiberalMLANova Scotia
5/5
Casey, PC MLA for Colchester North, crossed to the Liberals in 2011 after clashing with PC leader Jamie Baillie.
Fought Their LeaderGot Cabinet
Bill Casey
2007NotableConservative → 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…
Stood on Principle
Scott Brison
2003NotableProg. Conservative → LiberalMPNova Scotia
4/5
When the Progressive Conservatives merged with the Canadian Alliance to form today's Conservative Party, Brison refused to go along. He joined the Liberals instead.
Party MergedGot Cabinet
John Patrick (Pat) Nowlan
1990Progressive Conservative → Independent ConservativeMPNova Scotia
0/5
Pat Nowlan, a veteran Progressive Conservative MP for Annapolis Valley—Hants who had served since 1965, left the Conservative caucus in June 1990 over deep disagreements with Br…
Fought Their Leader
William Stevens Fielding
1917NotableLiberal → 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 …
War & ConscriptionGot Cabinet
Samuel McDonnell
1874Conservative → LiberalMPNova Scotia
2/5
McDonnell, Conservative MP from Inverness, crossed to the Liberals in the wake of the Pacific Scandal.
Changed Beliefs
Newton LeGayet MacKay
1873Conservative → LiberalMPNova Scotia
3/5
MacKay, Conservative MP from Cape Breton, crossed to the Liberals in 1873 during the Pacific Scandal crisis that brought down John A. Macdonald's government.
Changed Beliefs
Alfred Gilpin Jones
1872NotableIndependent → LiberalMPNova Scotia
4/5
Alfred Gilpin Jones, elected as an Anti-Confederate in 1867 and then sitting as an Independent, gradually aligned with the Liberal Party by 1872 as the anti-Confederation moveme…
Changed BeliefsGot Cabinet
1A
14 Anti-Confederate MPs join various parties
1869NotableAnti-Confederate → VariousMPNova Scotia
3/5
When Joseph Howe negotiated better terms for Nova Scotia and joined the federal cabinet, 14 remaining Anti-Confederate MPs followed suit, joining the Liberal-Conservatives or Li…
Party Dissolved
Joseph Howe
1869NotableAnti-Confederate → Liberal-ConservativeMPNova Scotia
5/5
Howe led the fight against Nova Scotia joining Canada. When that fight was lost, he negotiated better financial terms for Nova Scotia, then joined the government.
Party DissolvedGot Cabinet
SC
Stewart Campbell
1868Anti-Confederate → Liberal-ConservativeMPNova Scotia
2/5
Campbell, elected as an Anti-Confederate MP from Nova Scotia, joined the Liberal-Conservatives as the Anti-Confederate movement dissolved after Confederation.
Party Dissolved