The Political Record · Federal electoral districts
Lac-Saint-Jean
Federal riding · QC · No. 24033 · 2023 representation order
- Member
- Alexis Brunelle-Duceppe Bloc Québécois
- 2025 result
- Bloc Québécois hold by 9,533 votes
- Turnout
- 64.0% of 75,686 electors
- Population
- 92,035 2021 census
- Area
- 42,430 km²
- Figures as of
- 2026-09-25
Distinctions · ranked against all 343 ridings
- Most French mother tongue98.5% have French as a mother tongue, the highest of 343 (Share with French as a mother tongue, 2021 census)
- Smallest immigrant share0.9% are immigrants, 2nd lowest of 343 (Share who are immigrants, 2021 census)
- Area, largest first42,430 km² · 31st of 343 in Canada
In brief
- Alexis Brunelle-Duceppe held the seat for the Bloc Québécoiss by 9,533 votes (+19.9 points).
- The riding shrank in 2023: it keeps 70% of the old Lac-Saint-Jean.
- Election-day and advance voters agreed on the winner; 67.6% of votes were cast on the day.
- Share with French as a mother tongue is the 1st highest of 343 ridings.
Illustration after: © House of Commons
Member of Parliament
Alexis Brunelle-Duceppe
- Member: Foreign Affairs and International Development
- Member: Subcommittee on Agenda and Procedure
- Member: Subcommittee on International Human Rights
- Vice-Chair: Foreign Affairs and International Development
IDid this riding change?
Yes — it shrank. All of today's Lac-Saint-Jean comes from the old Lac-Saint-Jean, but it is only 70% of that riding. The rest went elsewhere.
Share of today's areaFormer riding
100.0%Lac-Saint-Jean 70% 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
Bloc Québécois hold
Elected
Alexis Brunelle-Duceppe
Bloc Québécois
22,069
46.2% of valid votes
Margin
9,533
votes · +19.9 pts
Runner-up
Denis Lemieux
Liberal
12,536
26.3% of valid votes
Bloc Québécois 46.2% · Liberal 26.3% · Conservative 24.7% · New Democratic 1.7% · People's 1.1%
Turnout64.0% of 75,686 electors
| Candidate | Party | Votes | % | 2021 | ± |
|---|---|---|---|---|---|
| Alexis Brunelle-Duceppe | Bloc Québécois | 22,069 | 46.2% | 49.7% | −3.5 |
| Denis Lemieux | Liberal | 12,536 | 26.3% | 18.5% | +7.8 |
| Dave Blackburn | Conservative | 11,792 | 24.7% | 24.7% | +0.0 |
| Hugues Boily-Maltais | New Democratic | 819 | 1.7% | 3.2% | −1.5 |
| Lorie Bouchard | People's | 540 | 1.1% | — | +1.1 |
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
9.9 pts
Half the margin: the share that would have had to move from first to second.
Third place vs. the margin
11,792 votes
Conservative took more than the 9,533-vote margin. True in 100 of 343 ridings in 2025.
Election-day polls won by others
20 of 198
3 polls ended in an exact tie.
Flip the seatHypothetical
It would have taken 4,767 voters switching from Bloc Québécois to Liberal — 10.0% of the 47,756 valid votes, 9.9 points — to change the result. No ballot was cast this way; this only moves votes between the top two.
Bloc Québécois22,069
Liberal12,536
Still Bloc Québécois by 9,533 votes. Actual margin: 9,533.
IVElection day versus advance
Only 67.6% of this riding's votes were cast at election-day polls. The rest were advance or special ballots.
Election dayAdvance & specialGap
Bloc Québécois46.2%46.3%+0.1
Conservative27.4%19.1%−8.3
Liberal23.3%32.4%+9.1
New Democratic1.9%1.3%−0.6
People's1.3%0.8%−0.5
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 $66,500 — about 79 percent of the median riding's $84,000.highestlowest44th lowest of 343
- Median age is 49.2 — about 1.2 times the median riding's 41.6.highestlowest34th highest of 343
- Share aged 25-64 with a bachelor's degree or higher is 15.3% — about 54 percent of the median riding's 28.2%.highestlowest39th lowest of 343
- Share who are immigrants is 0.9% — about 5 percent of the median riding's 17.3%.highestlowest2nd lowest of 343
- Share of households that own their home is 71.5% — about the same as the median riding's 71.4%.highestlowest168th highest of 343
- Share with French as a mother tongue is 98.5% — about 61.6 times the median riding's 1.6%.highestlowest1st 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
loading basemap…
The card
No. 24033QC · 2025
Lac-Saint-Jean
Alexis Brunelle-Duceppe
- Result
- Bloc Québécois hold by 9,533
- Turnout
- 64.0%
- Population
- 92,035
- Area
- 42,430 km²
Most French mother tongueSmallest immigrant shareArea, largest first
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.
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