All Floor Crossings

McPherson, Saskatchewan NDP MLA, left the NDP to join the Liberals.

Wilson, former BC Liberal leader, and Tyabji left the Liberals after Wilson was ousted as leader due to a personal scandal involving his relationship with Tyabji. They founded t…

Holden represented English-speaking Westmount in a party that fought for English language rights. He crossed to the Parti Québécois - a French-first, pro-independence party. It …

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 …

Tremblay was a PC MP who left to join the new Bloc Québécois movement.

David Kilgour

1990Notable

Prog. 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.

François Gérin, a Progressive Conservative MP for Mégantic—Compton—Stanstead, was among the first Quebec MPs to break with Brian Mulroney over the failure of the Meech Lake Acco…

Chartrand was among the PC MPs who followed Lucien Bouchard to form the Bloc Québécois after the Meech Lake Accord failure.

Gilles Duceppe

1990Notable

Independent → Bloc QuébécoisMPQuebec

5/5

Gilles Duceppe made history on August 13, 1990, when he won the by-election in Laurier—Sainte-Marie as an Independent sovereigntist — the first explicitly pro-sovereignty candid…

Rocheleau was one of the Liberal MPs who left to co-found the Bloc Québécois after the Meech Lake Accord failed.

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.

John Patrick (Pat) Nowlan

1990

Progressive 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…

Louis Plamondon, a Progressive Conservative MP for Richelieu since 1984, left the Conservative caucus in June 1990 in the wake of the Meech Lake crisis and joined the nascent Bl…

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…

Leblanc was a PC MP who joined the Bloc Québécois as a founding member after the collapse of the Meech Lake Accord.

Venne left the PC caucus to join the Bloc Québécois as a founding member, motivated by Quebec sovereignty.

Richard Grisé, a Progressive Conservative MP from Quebec's Chambly riding, was effectively expelled from the PC caucus in April 1989 over personal conduct issues that made his c…

Donald James Johnston

1988Notable

Liberal → Independent LiberalMPQuebec

1/5

Donald Johnston, a prominent Montreal Liberal MP and former cabinet minister under Pierre Trudeau and John Turner, broke with the Liberal Party in January 1988 over his vehement…

Suzanne Blais-Grenier was a Quebec Progressive Conservative MP who had served as Minister of State for the Environment in Brian Mulroney's first cabinet — the first woman to hol…

Ramsay, Ontario NDP MPP for Timiskaming, left the NDP to join the Ontario Liberals under David Peterson.

Roch, Manitoba Liberal MLA for Springfield, crossed to the PCs after failing to secure a Liberal nomination for the next election.

Toupin left the Conservatives, tried to join the Liberals - but the Liberals said no. He briefly joined the NDP, then sat alone as an independent.

Lupusella, Ontario NDP MPP for Dovercourt, left the NDP to join the Ontario Liberals alongside David Ramsay.

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.