Skip to the page
The Political Record · The ledger · Act II, The first autumn

Who crossed the floor in 2025?

Across the Floor ·
Across the Floor: the scene’s engraving

Across the Floor

· Act II

Play it on the board

Two members of Parliament changed party in the House of Commons between November 4, 2025 and December 11, 2025: Chris d'Entremont (Acadie—Annapolis), from the Conservatives to the Liberals, on November 4, 2025; and Michael Ma (Markham—Unionville), from the Conservatives to the Liberals, on December 11, 2025.

Today: As of November 1, 2026, the Liberals hold 173 of 343 seats, the Conservatives 137, the Bloc Québécois 21, the NDP 5, and the Greens 1; 6 seats are vacant, and 172 make a majority. How the House stands

Members
2 changed party
Went to
2 the Liberals
Came from
2 the Conservatives
Liberal seats
169 → 171 (November 3, 2025 → December 11, 2025)
Vacant
0 → 0
Span
November 4, 2025 to December 11, 2025
Events
2, each with its source
Record as of
November 1, 2026
Every change of side, November 4, 2025 to December 11, 2025
DateMemberRidingFromToLiberal seats afterSource
Chris d'EntremontAcadie—AnnapolisConservativeLiberal170ourcommons.ca
Michael MaMarkham—UnionvilleConservativeLiberal171ourcommons.ca

Dates are the day the record each row links gives for the change; press reports can differ by a day. Record as of ; corrections are dated in the register.

IEvent by event

· Crosses the floor

Chris d'Entremont sits as a Liberal

Chris d'Entremont, member for Acadie—Annapolis, leaves the Conservative caucus and sits for the Liberals from this day.1

Member
Chris d'Entremont, first elected October 21, 2019
Sides
Conservative → Liberal
In 2025
Chris d'Entremont won it for the Conservatives with 47.7% of the vote, a margin of 1.1 points (Elections Canada)

After this event: LPC 170 · CPC 143 · BQ 22 · NDP 7 · GPC 1. Ledger row

· Crosses the floor

Michael Ma sits as a Liberal

Michael Ma, member for Markham—Unionville, leaves the Conservative caucus and sits for the Liberals from this day.2

Member
Michael Ma, first elected April 28, 2025
Sides
Conservative → Liberal
In 2025
Michael Ma won it for the Conservatives with 50.7% of the vote, a margin of 3.6 points (Elections Canada)

After this event: LPC 171 · CPC 142 · BQ 22 · NDP 7 · GPC 1. Ledger row

IIThe House before and after

The House the day before the first event, , and after the last, .

Seats by party, November 3, 2025 and December 11, 2025
PartyChange
Liberal169171+2
Conservative144142−2
Bloc Québécois22220
New Democratic770
Green110
Vacant000
Seats343343

Source: the events applied to Elections Canada's 2025 results; every event's own source is listed below.

Also in this span. Three other events moved the board between those dates, so the change above is not this story's alone: , Budget 2025 in the House; , NDP leadership: five candidates; , The budget vote carries.

Sources and citation

  1. ourcommons.ca ourcommons.ca/members/en/chris-d-entremont(49344)/roles
  2. ourcommons.ca ourcommons.ca/members/en/michael-ma(105088)/roles

The seats: Elections Canada's official 2025 results with every event since applied to them, and the House's list of members as of November 1, 2026. Page built 2026-11-03. Corrections: the register.

"Who crossed the floor in 2025?" (Across the Floor). The Political Record. https://politicalrecord.ca/house/ledger/2025-fall-sides/ Accessed 2026-11-03.