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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.
91 events, not people — 24 of 91 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 Withdrawn records are excluded from this listing.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
6 of 94
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.
39 of 94
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.
23 of 94
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
The 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-000281CTF-E-NWS-20251009-344096FCOn September 24, 2025, in the Senate of Canada, the recorded affiliation of Sandra Pupatello changes from the Canadian Senators Group to the Government Representative's Office. The event…
CTF-E-PLI-20250924-DED55274Group event
One event in which several members moved together. It counts as ONE event with several participants, never as several separate crossings.
On September 24, 2025, in the Senate of Canada, the record groups four changes of affiliation, each from Non-affiliated to the Government Representative's Office. Four people are named…
CTF-E-PLI-20250924-7A5FF61AOn September 23, 2025, in the Senate of Canada, the recorded affiliation of Pat Duncan changes from the Independent Senators Group to Non-affiliated. The event record cites one source, a…
CTF-E-PLI-20250923-EBC0BD4BCTF-E-NWS-20250922-DF22941FElenore 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-000285On September 5, 2025, in the Senate of Canada, the recorded affiliation of Pierre J. Dalphond changes from the Progressive Senate Group to the Independent Senators Group. The event record…
CTF-E-PLI-20250905-FB1046D2Pierre 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-000284On August 1, 2025, in the Senate of Canada, the recorded affiliation of Julie Miville-Dechêne changes from the Independent Senators Group to the Progressive Senate Group. The event record…
CTF-E-PLI-20250801-E8999E6COn July 18, 2025, in the Senate of Canada, the recorded affiliation of Pierre Moreau changes from the Progressive Senate Group to Non-affiliated. The event record cites one source, a…
CTF-E-PLI-20250718-4404093EOn June 12, 2025, in the Senate of Canada, the recorded affiliation of Larry W. Smith changes from the Canadian Senators Group to the Conservative Party of Canada. The event record cites…
CTF-E-PLI-20250612-B30985E3On June 10, 2025, in the Senate of Canada, the recorded affiliation of Mary Jane McCallum changes from Non-affiliated to the Conservative Party of Canada. The event record cites one source,…
CTF-E-PLI-20250610-9C661335CTF-E-NWS-20250609-96D8DA35CTF-E-NWS-20250609-52EDCBAF