✶ 343 ridings · 343 circonscriptions
One X,
343 times.
Canadians elect the Chambre des communes in 343 single-member ridings. Each voter marks one candidate; whoever has the most votes wins, majority or not. How many ridings each province gets is set by a formula in the Constitution, and their lines are drawn by ten independent commissions.
First past the post · April 28, 2025
Most votes
wins the seat.
- Liberal 43.8% votes · 49.3% seats (169)
- Conservative 41.3% votes · 42.0% seats (144)
- Bloc 6.3% votes · 6.4% seats (22)
- NDP 6.3% votes · 2.0% seats (7)
- Green 1.2% votes · 0.3% seats (1)
- People's 0.7% votes · 0.0% seats (0)
Thin bar: votes. Thick bar: seats. The Bloc's vote is concentrated in Quebec, so its seat share exceeds its vote share; the NDP's 6.3% is spread thin and returned seven MPs.
By first-past-the-post standards 2025 was close to proportional, because two parties took 85.1% of the vote between them. The House's own electoral reform committee (ERRE) recommended in December 2016 a proportional system with a Gallagher score of 5 or less, to be put to a referendum; the government dropped the idea in February 2017. 2025's score was 5.02; 2021's, on 338 ridings, 13.4.
Constitution Act, 1867, s.51 · Representation Order 2023
Where 343
comes from.
- The quotient. The 2012 quotient, 111,166, times the average growth of the ten provinces since 2011 (9.647%), rounded up: 121,891 (rule 6).
- Rule 1. Each province's population on July 1, 2021 divided by the quotient, rounded up.
- Senatorial clause (s.51A). No province has fewer MPs than senators: New Brunswick (10 senators), Prince Edward Island (4), Nova Scotia and Newfoundland and Labrador are lifted.
- Grandfather clause (rule 2). No province has fewer seats than in the 43rd Parliament (2019). Until Bill C-14 (S.C. 2022, c. 6) the reference was the 33rd Parliament, elected in 1984.
- Representation rule (rules 3–4). A province that was over-represented after the last readjustment gets seats until its share of seats is no lower than its share of population. In 2022 it added none.
- Territories. One seat each for Yukon, the Northwest Territories and Nunavut (s.51(2)).
| Province or territory | Population, July 1, 2021 | Rule 1 | Senatorial | Grandfather | Representation rule | Seats |
|---|---|---|---|---|---|---|
| Newfoundland and Labrador | 520,553 | 5 | +1 | +1 | – | 7 |
| Prince Edward Island | 164,318 | 2 | +2 | – | – | 4 |
| Nova Scotia | 992,055 | 9 | +1 | +1 | – | 11 |
| New Brunswick | 789,225 | 7 | +3 | – | – | 10 |
| Quebec | 8,604,495 | 71 | – | +7 | – | 78 |
| Ontario | 14,826,276 | 122 | – | – | – | 122 |
| Manitoba | 1,383,765 | 12 | – | +2 | – | 14 |
| Saskatchewan | 1,179,844 | 10 | – | +4 | – | 14 |
| Alberta | 4,442,879 | 37 | – | – | – | 37 |
| British Columbia | 5,214,805 | 43 | – | – | – | 43 |
| Yukon | 42,986 | n/a | – | – | – | 1 |
| Northwest Territories | 45,504 | n/a | – | – | – | 1 |
| Nunavut | 39,403 | n/a | – | – | – | 1 |
| Canada | 38,246,108 | Electoral quotient 121,891 | 343 | |||
| Province or territory | Population, July 1, 2021 | Rule 1 | Senatorial | Grandfather | Representation rule | Seats |
|---|---|---|---|---|---|---|
| Newfoundland and Labrador | 520,553 | 5 | +1 | +1 | – | 7 |
| Prince Edward Island | 164,318 | 2 | +2 | – | – | 4 |
| Nova Scotia | 992,055 | 9 | +1 | +1 | – | 11 |
| New Brunswick | 789,225 | 7 | +3 | – | – | 10 |
| Quebec | 8,604,495 | 71 | – | +4 | +2 | 77 |
| Ontario | 14,826,276 | 122 | – | – | – | 122 |
| Manitoba | 1,383,765 | 12 | – | +2 | – | 14 |
| Saskatchewan | 1,179,844 | 10 | – | +4 | – | 14 |
| Alberta | 4,442,879 | 37 | – | – | – | 37 |
| British Columbia | 5,214,805 | 43 | – | – | – | 43 |
| Yukon | 42,986 | n/a | – | – | – | 1 |
| Northwest Territories | 45,504 | n/a | – | – | – | 1 |
| Nunavut | 39,403 | n/a | – | – | – | 1 |
| Canada | 38,246,108 | Electoral quotient 121,891 | 342 | |||
Computed here from the populations alone and checked against Elections Canada's published table. The highlighted row is the one the two calculations disagree on: Quebec, 77 in October 2021, 78 once Bill C-14 moved the grandfather clause's reference from 1984 to the 43rd Parliament.
Seats are only the first step. For each province the Speaker and the province's chief justice appoint a three-member electoral boundaries commission, chaired by a judge, under the Electoral Boundaries Readjustment Act (Loi sur la révision des limites des circonscriptions électorales). Each riding should be as close as reasonably possible to the province's quota, its population divided by its seats, and stay within 25% of it except in "extraordinary" circumstances (s.15). The 2023 Representation Order (Décret de représentation) was proclaimed on September 22, 2023, and first used on April 28, 2025.
Population per seat · July 1, 2021
Not every seat
weighs the same.
The two floors protect the small and slow-growing provinces. A seat in Prince Edward Island stands for 41,080 people; in Ontario 121,527, in Alberta 120,078.
- Ontario 121,527
- British Columbia 121,275
- Alberta 120,078
- Quebec 110,314
- Manitoba 98,840
- Nova Scotia 90,187
- Saskatchewan 84,275
- New Brunswick 78,923
- Newfoundland and Labrador 74,365
- Northwest Territories 45,504
- Yukon 42,986
- Prince Edward Island 41,080
- Nunavut 39,403
Inside the provinces
Seat lab · 2025 votes
Same votes,
other rules.
Move the national shares to swing every riding by the same amount, then see what the same ballots would elect under proportional representation.
| Party | Votes | FPTP | National PR | Provincial PR | MMP |
|---|---|---|---|---|---|
How each column is counted
- FPTP: each party's change in national share is spread over the ridings it contested and added to its share there (uniform swing); the leader in each riding wins.
- National PR: one list for all 343 seats, by highest averages.
- Provincial PR: each province keeps its seats and divides them on its own votes; the threshold applies within the province. The three territories stay winner-take-all.
- MMP: in each province a share of seats (one third, as the Law Commission of Canada proposed in 2004, or 40%, or half) becomes compensatory list seats, awarded by D'Hondt or Sainte-Laguë counting the local seats already won. Local seats are each party's FPTP wins scaled down to the smaller number of ridings: an estimate, since redrawn ridings would have their own results.
- "Others" (independents and small parties) are pooled, so they never win list seats.
Why no ranked ballot?
The instant-runoff (alternative) vote needs voters' second and later preferences. A Canadian ballot records a single X, and Elections Canada publishes only first choices, so there is nothing to transfer: any IRV result for 2025 would be a guess built on polls of "second choices", not a count. The lab therefore leaves IRV out.
Electoral reform
Asked, and
declined.
Federally, the Special Committee on Electoral Reform reported on December 1, 2016. On February 1, 2017, the minister's mandate letter said: "Changing the electoral system will not be in your mandate." A 2024 NDP motion for a citizens' assembly (M-86) was defeated 101 to 220. The provinces have voted seven times since 2005:
| Vote | Result | Outcome |
|---|---|---|
| British Columbia, 2005 (BC-STV) | 57.69% yes; needed 60% (carried 77 of 79 districts) | Failed |
| Prince Edward Island, 2005 (MMP) | 36.42% yes | Failed |
| Ontario, 2007 (MMP) | 36.82% yes (secondary source) | Failed |
| British Columbia, 2009 (BC-STV) | 39.09% yes | Failed |
| Prince Edward Island, 2016 plebiscite | MMP won the final round, 52.42%, on 36.5% turnout | Not implemented |
| British Columbia, 2018 | FPTP 61.30%, PR 38.70% | PR rejected |
| Prince Edward Island, 2019 (MMP) | 48.26% yes; carried 14 of 27 districts, needed 17 | Failed |