The Political Record · Federal electoral districts
Ottawa—Vanier—Gloucester
Federal riding · ON · No. 35081 · 2023 representation order
- Member
- Mona Fortier Liberal
- 2025 result
- Liberal hold by 31,301 votes
- Turnout
- 69.3% of 99,345 electors
- Population
- 126,920 2021 census
- Area
- 57 km²
- Figures as of
- 2026-09-25
Distinctions · ranked against all 343 ridings
- Won every election-day pollAll 217 election-day polls went to the winner · one of 15 of 343
- Widest margin in OntarioWon by 45.9 points (31,301 votes) · 2nd of 122 in Ontario · 24th of 343 in Canada
- Length of the ballot8 candidates stood · 11th of 343 in Canada
In brief
Illustration after: © House of Commons
Member of Parliament
Mona Fortier
- Parliamentary Secretary to the Minister of Foreign Affairs
- Member: Foreign Affairs and International Development
- Member: Subcommittee on Agenda and Procedure
IDid this riding change?
Yes. 18% of today's Ottawa—Vanier—Gloucester came from ridings other than the old Ottawa—Vanier.
Share of today's areaFormer riding
81.9%Ottawa—Vanier 99% of it kept
18.0%Orléans 5% of it kept
How this is measured. Share of the current riding's area that came from each former riding, by intersecting the 2013 and 2023 boundary files. It is area, not population. Elections Canada counts 48 of 343 ridings as entirely unchanged.
IIThe 2025 result
Liberal hold
Elected
Mona Fortier
Liberal
45,934
67.4% of valid votes
Margin
31,301
votes · +45.9 pts
Runner-up
Dean Wythe
Conservative
14,633
21.5% of valid votes
Liberal 67.4% · Conservative 21.5% · New Democratic 7.6% · Green 2.0%
Turnout69.3% of 99,345 electors
| Candidate | Party | Votes | % | 2021 | ± |
|---|---|---|---|---|---|
| Mona Fortier | Liberal | 45,934 | 67.4% | 48.5% | +18.9 |
| Dean Wythe | Conservative | 14,633 | 21.5% | 20.3% | +1.2 |
| Tristan Oliff | New Democratic | 5,164 | 7.6% | 23.0% | −15.4 |
| Christian Proulx | Green | 1,345 | 2.0% | 3.0% | −1.0 |
4 further candidates, each under 1% of the vote
| Marty Simms | People's | 349 | 0.5% |
| Coreen Corcoran | Other | 338 | 0.5% |
| Elizabeth Benoit | Independent | 238 | 0.3% |
| Christian Legeais | Other | 182 | 0.3% |
The 2021 column is Elections Canada's official transposition of the 2021 result onto these 2023 boundaries. ± is the change in each party's share. It is not "swing": with four or more competitive parties there is no single pair to swing between.
IIIHow close was it, really
Swing needed to flip
22.9 pts
Half the margin: the share that would have had to move from first to second.
Third place vs. the margin
5,164 votes
New Democratic took fewer than the 31,301-vote margin.
Election-day polls won by others
0 of 217
No poll ended in a tie.
Flip the seatHypothetical
It would have taken 15,651 voters switching from Liberal to Conservative — 23.0% of the 68,183 valid votes, 22.9 points — to change the result. No ballot was cast this way; this only moves votes between the top two.
Liberal45,934
Conservative14,633
Still Liberal by 31,301 votes. Actual margin: 31,301.
IVElection day versus advance
Only 54.4% of this riding's votes were cast at election-day polls. The rest were advance or special ballots.
Election dayAdvance & specialGap
Liberal64.0%71.4%+7.4
Conservative24.0%18.5%−5.5
New Democratic8.1%7.0%−1.1
Green2.0%1.9%−0.1
Other0.9%0.6%−0.3
An association, not a cause. Voters who cast ballots before election day differed from those who turned out on the day. It does not say why. There is no poll-level turnout figure on this page: the elector count on a polling division includes people who voted in advance and were counted elsewhere.
VWhat kind of place this is
- Median total household income is $77,500 — a little lower than the median riding's $84,000.highestlowest121st lowest of 343
- Median age is 40.4 — about the same as the median riding's 41.6.highestlowest123rd lowest of 343
- Share aged 25-64 with a bachelor's degree or higher is 47.5% — about 1.7 times the median riding's 28.2%.highestlowest56th highest of 343
- Share who are immigrants is 26.2% — about 1.5 times the median riding's 17.3%.highestlowest123rd highest of 343
- Share of households that own their home is 44.0% — about 62 percent of the median riding's 71.4%.highestlowest32nd lowest of 343
- Share with French as a mother tongue is 23.2% — about 14.5 times the median riding's 1.6%.highestlowest84th highest of 343
2021 Census, keyed to the 2023 representation order. Comparisons are against the median riding, not Canada as a whole. Each rule places this riding among all 343.
VIWhere it is
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The card
No. 35081ON · 2025
Ottawa—Vanier—Gloucester
Mona Fortier
- Result
- Liberal hold by 31,301
- Turnout
- 69.3%
- Population
- 126,920
- Area
- 57 km²
Won every election-day pollWidest margin in OntarioLength of the ballot
One of 343The Political Record
A card exists for every one of the 343 ridings.
Every figure on it is the figure on this page: the 2025 result and margin, turnout, the 2021 census population, the area, and the distinctions ranked against all 343 ridings. The portrait is an illustration after the official House of Commons photograph.
Open a neighbour to collect the next one.