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Every affiliation event this project holds, verified and unverified alike. The unit is the event: a caucus that moved together is one row with several participants. Each row states how well dated it is, how well evidenced it is, and whether it meets the publication standard.
35 events, not people — 35 of 35 of the events matching these filters meet the publication standard
This list counts events, not people. A group event is one row here and several people in a person-based tally. Withdrawn records are excluded from this listing. Coverage report
11 of 37
Carried to another party
A seat given to one party at an election, sitting under another party’s banner without an election in between. This is the floor-crossing figure, and it is the only figure that may be published under that name.
17 of 37
Left a caucus for the crossbench
The member left a caucus and sat as an independent. No party gained the seat. This figure has its own headline and is never added to the one beside it — adding the two is the single error this whole classification exists to prevent.
9 of 37
Joined a party from the crossbench
Counted toward neither headline above. The outbound leg of the same episode is already in the crossbench figure, so counting the return as well would count one person twice. Whether the voters were asked in between is the interesting question, and it is answered separately below.
These two figures are never summed. A seat carried to another party and a member who left a caucus for the crossbench are different acts, and a total that merges them answers no question anybody asked.
Measured over the records these filters admit, not over the whole database. The record-wide figures are on the coverage report. This selects RECORDS holding at least one participation of the class asked for, and each matching record still lists all of its people — so a group record where nine members crossed and one left for the crossbench matches either filter, and shows all ten either way. To count acts rather than records, read the figures above, which count people.
Every leg below states where the seat went: to another party, or out of a caucus to the crossbench. The two are counted separately and never share a total. The tally beside each is for the events on this page only, not for the record as a whole.
Why these are counted apart, and what the project believes about it
Amelia Boultbee joined the British Columbia New Democratic Party on July 3, 2026, after sitting as an Independent. No post-crossing office or compensation is asserted.
CTF-E-000282The House of Commons records Simon-Pierre Savard-Tremblay's affiliation changing from Independent to Bloc Québécois on June 19, 2026. It separately records his resignation that day.
CTF-E-000276The House of Commons records Simon-Pierre Savard-Tremblay's affiliation changing from Bloc Québécois to Independent on May 28, 2026. The archive does not infer motive or benefit.
CTF-E-000275Becky Druhan joined the Nova Scotia Liberal Party on May 11, 2026, after sitting as an Independent. The same report records new caucus and critic responsibilities; those are stored as a…
CTF-E-000280The House of Commons records Alexandre Boulerice's affiliation changing from NDP to Independent on April 27, 2026. The archive does not infer motive or benefit.
CTF-E-000274The House of Commons records Marilyn Gladu's affiliation changing from Conservative to Liberal on April 8, 2026. The archive does not infer motive or benefit.
CTF-E-000093Lionel Carmant rejoined the Coalition Avenir Québec caucus on April 1, 2026, after sitting as an Independent. His cabinet appointment twenty days later is an observed outcome; causation is…
CTF-E-000287Maïté Blanchette Vézina appeared officially in the National Assembly as a member of the Conservative Party of Quebec on March 26, 2026, after an announcement two days earlier. The legacy…
CTF-E-000141The House of Commons records Lori Idlout's affiliation changing from NDP to Liberal on March 11, 2026. The archive does not infer motive or benefit.
CTF-E-000122The House of Commons records Matt Jeneroux's affiliation changing from Conservative to Liberal on February 18, 2026. The archive does not infer motive or benefit.
CTF-E-000092François Tremblay ceased to be a member of the Coalition Avenir Québec caucus on January 9, 2026, and began sitting as an Independent. The archive records the affiliation decision without…
CTF-E-000293Christian Dubé resigned from cabinet and left the Coalition Avenir Québec caucus on December 18, 2025, then began sitting as an Independent. The cabinet loss is recorded as a separate…
CTF-E-000292The House of Commons records Michael Ma's affiliation changing from Conservative to Liberal on December 11, 2025. The archive does not infer motive or benefit.
CTF-E-000091Sona Lakhoyan Olivier was excluded from the Quebec Liberal caucus on December 4, 2025, and began sitting as an Independent. The literal caucus status and date are corroborated.
CTF-E-000291Marwah Rizqy was expelled from the Quebec Liberal caucus on December 2, 2025, and began sitting as an Independent. The archive records the caucus decision without adopting disputed motive…
CTF-E-000290Vincent Marissal left the Québec solidaire caucus on November 22, 2025, and began sitting as an Independent. The cited sources corroborate the affiliation and exact date.
CTF-E-000289Isabelle Poulet was expelled from the Coalition Avenir Québec caucus on November 4, 2025, and began sitting as an Independent. The official records support the literal affiliation change…
CTF-E-000288The House of Commons records Chris d'Entremont's affiliation changing from Conservative to Liberal on November 4, 2025. The archive does not infer motive or benefit.
CTF-E-000090Lionel Carmant left the Coalition Avenir Québec caucus and cabinet on October 30, 2025, and began sitting as an Independent. The cabinet departure is recorded separately as an observed…
CTF-E-000286Becky Druhan left the Nova Scotia Progressive Conservative caucus on October 27, 2025, and began sitting as an Independent. The cited sources support the affiliation and date; motive…
CTF-E-000279Amelia Boultbee left the Conservative Party of British Columbia caucus on October 20, 2025, and began sitting as an Independent. Parliamentary and news sources corroborate the affiliation…
CTF-E-000281Elenore Sturko was removed from the Conservative Party of British Columbia caucus on September 22, 2025, and began sitting as an Independent. The exact date and current affiliation are…
CTF-E-000294Maïté Blanchette Vézina left the Coalition Avenir Québec caucus on September 18, 2025, and began sitting as an Independent. This is distinct from her later Conservative affiliation.
CTF-E-000285Pierre Dufour was expelled from the Coalition Avenir Québec caucus on September 5, 2025, and began sitting as an Independent. The expulsion and date are corroborated; no broader allegation…
CTF-E-000284