The Political Record · Federal electoral districts

Brossard—Saint-Lambert

Federal riding · QC · No. 24015 · 2023 representation order
Fig. 1 — Brossard—Saint-Lambert, 2023 boundaries.
Member
Alexandra Mendès Liberal
2025 result
Liberal hold by 25,465 votes
Turnout
68.2% of 87,028 electors
Population
114,290 2021 census
Area
65 km²
Figures as of
2026-09-25
Distinctions · ranked against all 343 ridings
  • Boundaries unchanged in 2023: Covers the same ground as its predecessor · one of 59 of 343 by area59
    Boundaries unchanged in 2023
    Covers the same ground as its predecessor · one of 59 of 343 by area
  • Width of the margin: Won by 43.3 points (25,465 votes) · 37th of 343 in Canada37th
    Width of the margin
    Won by 43.3 points (25,465 votes) · 37th of 343 in Canada
  • Length of the ballot: 6 candidates stood · 61st of 343 in Canada61st
    Length of the ballot
    6 candidates stood · 61st of 343 in Canada
In brief
  1. Alexandra Mendès held the seat for the Liberals by 25,465 votes (+43.3 points).
  2. The boundaries did not change in 2023.
  3. Election-day and advance voters agreed on the winner; 52.1% of votes were cast on the day.
  4. Share aged 25-64 with a bachelor's degree or higher is the 50th highest of 343 ridings.
Illustration after: © House of Commons
Member of Parliament
Alexandra Mendès
Liberal · first elected 2008-10-14 · 5 terms
  • Assistant Deputy Speaker and Deputy Chair of Committees of the Whole
11 speeches in the 45th Parliament, most often on Interparliamentary Delegations.

IDid this riding change?

Essentially no. Today's Brossard—Saint-Lambert covers almost exactly the same ground as the Brossard—Saint-Lambert riding it replaced.

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
Alexandra Mendès
Liberal
36,541
62.2% of valid votes
Margin
25,465
votes · +43.3 pts
Runner-up
William Huynh-Jan
Conservative
11,076
18.9% of valid votes
Liberal 62.2% · Conservative 18.9% · Bloc Québécois 13.3% · New Democratic 3.5% · Green 1.5%
Turnout68.2% of 87,028 electors
CandidatePartyVotes%2021±
Alexandra MendèsLiberal36,54162.2%53.3%+8.9
William Huynh-JanConservative11,07618.9%11.8%+7.1
Soledad Orihuela-BouchardBloc Québécois7,83713.3%19.7%−6.4
Zeinab Mistou AkkaouiNew Democratic2,0493.5%10.3%−6.8
Gregory De LucaGreen8551.5%—+1.5
1 further candidate, under 1% of the vote
Hector HuertaPeople's3810.6%
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
21.6 pts
Half the margin: the share that would have had to move from first to second.
Third place vs. the margin
7,837 votes
Bloc Québécois took fewer than the 25,465-vote margin.
Election-day polls won by others
0 of 203
1 poll ended in an exact tie.
Fig. 2 — Each square is one election-day poll: ■ won by the Liberals (202) · ■ won by another party (0) · ▨ tied (1).
Flip the seatHypothetical

It would have taken 12,733 voters switching from Liberal to Conservative — 21.7% of the 58,739 valid votes, 21.6 points — to change the result. No ballot was cast this way; this only moves votes between the top two.

Liberal36,541
Conservative11,076
Still Liberal by 25,465 votes. Actual margin: 25,465.

IVElection day versus advance

Only 52.1% of this riding's votes were cast at election-day polls. The rest were advance or special ballots.

Election dayAdvance & specialGap
Liberal57.7%67.2%+9.5
Conservative22.1%15.4%−6.7
Bloc Québécois13.6%13.1%−0.5
New Democratic4.2%2.8%−1.4
Green1.7%1.2%−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

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…
Fig. 3 — Brossard—Saint-Lambert and its 5 neighbouring ridings.

The card

No. 24015QC · 2025
Brossard—Saint-Lambert
Alexandra Mendès
Result
Liberal hold by 25,465
Turnout
68.2%
Population
114,290
Area
65 km²
Boundaries unchanged in 2023: Covers the same ground as its predecessor · one of 59 of 343 by area59Boundaries unchanged in 2023Width of the margin: Won by 43.3 points (25,465 votes) · 37th of 343 in Canada37thWidth of the marginLength of the ballot: 6 candidates stood · 61st of 343 in Canada61stLength 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.