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The record of Canadian politicians who changed party affiliation between elections — federal, provincial and territorial. Every record states how well dated it is, how well evidenced it is, and whether it meets our publication standard.
The record holds 551 affiliation events (release 2026-08-01.1), of which 35 meet the project's publication standard. The unit is the event, as defined by the published inclusion criteria: a caucus that moves together is one event with several participants, not several crossings. Those events carry 839 named participations across 511 distinct people.
551
affiliation events
35 of 551
meet the publication standard
839
named participations
511
distinct people
Leaving your caucus to sit as an independent and carrying your seat into another party without an election are not the same thing, and this record never adds them together. The event total above counts both, because both are dated changes of recorded affiliation — so it is not a count of floor crossings, and should not be quoted as one. Every record on this page states which act it holds.
287 of 835
Carried to another party
180 of 835
Left a caucus for the crossbench
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.
The unit here is the participation leg — one person, in one event. It is not the event count used elsewhere on this site, and the two must not be compared without converting first.
The Library of Parliament publishes a count of federal members who changed party since 1867. That count and ours are different measurements, not competing estimates of one quantity: theirs counts people and covers the House of Commons only, ours counts events and covers federal, provincial and territorial legislatures. A group event that moved seventeen members counts as seventeen in a person-based tally and as one here. The counting rules set out how to convert between them.
Corroborated or better, published, and not withdrawn. These are the records to cite.
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-000280Ordered by the date the event happened. Records dated only to a year sort to the first of that year, which is why an undated older record can appear beside a precisely dated recent one.
CTF-E-NWS-20260927-EC7D18FBCTF-E-NWS-20260922-6AE7E06FCTF-E-NWS-20260921-216D14F8CTF-E-NWS-20260921-116A2BC3The newest event we hold for each jurisdiction. A stale frontier means we are behind there, not that nothing happened.
| Jurisdiction | Newest event | Events | Publishable |
|---|---|---|---|
| Manitoba | September 27, 2026 · CTF-E-NWS-20260927-EC7D18FB | 4 | 1 |
| British Columbia | September 22, 2026 · CTF-E-NWS-20260922-6AE7E06F | 57 | 6 |
| Canada | July 8, 2026 · CTF-E-PLI-20260708-DCC6051A | 412 | 10 |
| Nova Scotia | May 11, 2026 · CTF-E-000280 | 5 | 3 |
| Alberta | May 7, 2026 · CTF-E-NWS-20260507-A372473F | 12 | 0 |
| Saskatchewan | May 5, 2026 · CTF-E-NWS-20260505-2B93FEA5 | 11 | 0 |
| Quebec | April 22, 2026 · CTF-E-NWS-20260422-9D6B1CA4 | 22 | 13 |
| Ontario | September 22, 2025 · CTF-E-NWS-20250922-DF22941F | 10 | 2 |
| Newfoundland and Labrador | 2024 · CTF-E-000089 | 7 | 0 |
| New Brunswick | 2013 · CTF-E-000203 | 5 | 0 |
| Prince Edward Island | 2013 · CTF-E-000204 | 1 | 0 |
| Yukon | 2002 · CTF-E-000069 | 1 | 0 |
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