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The Political RecordFederal electoral districtsNo. 24074Quebec

Thérèse-De Blainville

Thérèse-De Blainville is a federal riding in Quebec. Madeleine Chenette (Liberal) has represented Thérèse-De Blainville since the 2025 election. Madeleine Chenette (Liberal) took Thérèse-De Blainville from the Bloc Québécois in the 2025 election by 8,691 votes (13.5 points), with 45.8% of the vote. Marie-Noëlle Closson-Duquette (Bloc Québécois) was second with 32.3%, on a turnout of 72.7% of 90,085 electors. Member as of .

Alfred-Pellan · LiberalMarc-Aurèle-Fortin · LiberalMirabel · Bloc QuébécoisRivière-des-Mille-Îles · LiberalRivière-du-Nord · Bloc QuébécoisTerrebonne · LiberalThérèse-De Blainville
Fig. 1 — Thérèse-De Blainville on the board, 2023 boundaries; the ridings next door as the House holds them on . Open it on the board →

Who represents Thérèse-De Blainville

LMadeleine Chenette
Madeleine Chenette's piece from the board. Illustration after the official portrait © House of Commons.

Madeleine Chenette

Member of Parliament for Thérèse-De Blainville

Liberal

MP since · first term

  • Parliamentary Secretary to the Minister of Canadian Identity and Culture and Minister responsible for Official Languages and to the Secretary of State (Sport)
  • Official Languages committee

83 speeches in the 45th Parliament, most often on Business of Supply — Opposition Motion—Apology to Those Whose Land Was Expropriated in Mirabel.

Contact and office · House of Commons →

The 2025 result: Liberal gain from the Bloc Québécois

Share of the valid votes by candidate, Thérèse-De Blainville, April 28, 2025

Share of the valid votes by candidate, Thérèse-De Blainville, April 28, 2025Of the 64,397 valid votes, Madeleine Chenette (Liberal) took 45.8%, Marie-Noëlle Closson-Duquette (Bloc Québécois) 32.3%, Julie Bergeron (Conservative) 18.7% and Michel Lacroix (New Democratic) 2.5%; one other candidate took 0.7%.2025Turnout 72.7% of 90,085 electorsMadeleine ChenetteLiberal45.8% · 29,5198,691 votes ahead · 13.5 ptsMarie-NoëlleClosson-DuquetteBloc Québécois32.3% · 20,828Julie BergeronConservative18.7% · 12,019Michel LacroixNew Democratic2.5% · 1,585Other (1)0.7% · 446050%100%
Share of the valid votes by candidate, Thérèse-De Blainville, April 28, 2025Of the 64,397 valid votes, Madeleine Chenette (Liberal) took 45.8%, Marie-Noëlle Closson-Duquette (Bloc Québécois) 32.3%, Julie Bergeron (Conservative) 18.7% and Michel Lacroix (New Democratic) 2.5%; one other candidate took 0.7%.2025Turnout 72.7% of 90,085 electorsMadeleine ChenetteLiberal45.8% · 29,5198,691 votes ahead · 13.5 ptsMarie-Noëlle Closson-DuquetteBloc Québécois32.3% · 20,828Julie BergeronConservative18.7% · 12,019Michel LacroixNew Democratic2.5% · 1,585Other (1)0.7% · 446050%100%
Shares of the 64,397 valid votes; a candidate under 1% is counted with the others. Source: Elections Canada, official voting results, the 2025 general election.
The figures
CandidatePartyVotesShare
Madeleine ChenetteLiberal29,51945.8%
Marie-Noëlle Closson-DuquetteBloc Québécois20,82832.3%
Julie BergeronConservative12,01918.7%
Michel LacroixNew Democratic1,5852.5%
Other (1)4460.7%

Madeleine Chenette (Liberal) won Thérèse-De Blainville on with 29,519 votes, 45.8% of the 64,397 valid votes. Marie-Noëlle Closson-Duquette (Bloc Québécois) was second with 20,828 (32.3%), 8,691 votes and 13.5 points behind.

Of the 64,397 valid votes, Madeleine Chenette (Liberal) took 45.8%, Marie-Noëlle Closson-Duquette (Bloc Québécois) 32.3%, Julie Bergeron (Conservative) 18.7% and Michel Lacroix (New Democratic) 2.5%; one other candidate took 0.7%. Turnout was 72.7% of 90,085 electors: 65,466 ballots cast, 64,397 of them valid, for 5 candidates.

Since 2021

Against the 2021 result on these boundaries, the Liberals are up 11.2 (34.6% to 45.8%), the Bloc Québécois down 7.9 (40.2% to 32.3%), the Conservatives up 7.8 (10.9% to 18.7%) and the New Democrats down 4.7 (7.2% to 2.5%), in points of the valid votes.

2021 is Elections Canada's transposition of that election onto the 2023 boundaries, not an election held on these lines.

Since 2004: no party has held it

The party first in Thérèse-De Blainville at each general election, 2004 to 2025, on today's boundaries

  1. 2004Bloc Québécois64.4%by 41.4 points over the Liberals
  2. 2006Bloc Québécois55.8%by 35.6 points over the Conservatives
  3. 2008Bloc Québécois49.6%by 29.8 points over the Liberals
  4. 2011changed handsNew Democratic49.5%by 20.5 points over the Bloc Québécois
  5. 2015changed handsLiberal32.3%by 4.8 points over the Bloc Québécois
  6. 2019changed handsBloc Québécois42.3%by 6.8 points over the Liberals
  7. 2021Bloc Québécois40.2%by 5.6 points over the Liberals
  8. 2025changed handsLiberal45.8%by 13.5 points over the Bloc Québécois
Each election carried onto today's boundaries by where the riding's 2025 electors lived: our estimate to 2019, Elections Canada's transposition for 2021, the official result for 2025. Parties are counted as they ran.
The figures
YearFirstShareSecondMargin (pts)Basis
2004Bloc Québécois64.4%Liberal41.4carried, our estimate
2006Bloc Québécois55.8%Conservative35.6carried, our estimate
2008Bloc Québécois49.6%Liberal29.8carried, our estimate
2011New Democratic49.5%Bloc Québécois20.5carried, our estimate
2015Liberal32.3%Bloc Québécois4.8carried, our estimate
2019Bloc Québécois42.3%Liberal6.8carried, our estimate
2021Bloc Québécois40.2%Liberal5.6transposed by Elections Canada
2025Liberal45.8%Bloc Québécois13.5official result

The Bloc Québécois were first at five of the eight general elections from 2004 to 2025, the Liberals at two and the NDP at one; it changed hands four times. In 2025 the Liberals took 45.8% of the vote here, 22.0 points above their average of 23.8% at the seven general elections from 2004 to 2021.

On today's boundaries the Bloc Québécois were first here in 2004 (64.4%), 2006 (55.8%), 2008 (49.6%), 2019 (42.3%) and 2021 (40.2%), the NDP in 2011 (49.5%) and the Liberals in 2015 (32.3%) and 2025 (45.8%), each with the share of the valid votes shown.

A stronghold is a party first at every general election since 2004, by an average of 20 points or more over the next party; held, first at every one; usually, first at all but one. By-elections are not counted. By this rule 160 of the 343 ridings have no degree. The results before 2021 are carried onto today's boundaries by where the riding's 2025 electors lived: our estimate, from the older boundaries of Taylor, Lucas, Kirby and Hewitt and the results in Sevi's "Who Runs?". 2021 is Elections Canada's transposition, and 2025 the official result.

Before 2025
  • 2021 Bloc Québécois · Louise Chabot, by 3,130 votes (6.0 pts)
  • 2019 Bloc Québécois · Louise Chabot, by 3,498 votes (6.0 pts)
  • 2015 Liberal · Ramez Ayoub, by 3,043 votes (5.4 pts)

In the old Thérèse-De Blainville on the 2013 boundaries, the riding most of the 2025 electors in today's Thérèse-De Blainville lived in; Elections Canada's official results.

What kind of place Thérèse-De Blainville is

Population
112,1602021 census
Area
81km²
Density
1,393people per km²
Electors
90,085on the 2025 lists
Distinctions · ranked against all 343 ridings
  • Changed hands in 2025: One of 58 of 343 ridings where the winning party changed from the transposed 2021 result (12 of 78 in Quebec)58
    Changed hands in 2025
    One of 58 of 343 ridings where the winning party changed from the transposed 2021 result (12 of 78 in Quebec)
  • Share with French as a mother tongue is 82.6% — about 51.6 times the median riding's 1.6%.
    highestlowest45th highest of 343
  • Median total household income is $92,000 — a little higher than the median riding's $84,000.
    highestlowest101st highest of 343
  • Median age is 42.8 — about the same as the median riding's 41.6.
    highestlowest132nd highest of 343
  • Share who are immigrants is 11.6% — about 67 percent of the median riding's 17.3%.
    highestlowest132nd lowest of 343
  • Share aged 25-64 with a bachelor's degree or higher is 29.7% — a little higher than the median riding's 28.2%.
    highestlowest160th highest of 343
  • Share of households that own their home is 70.7% — about the same as the median riding's 71.4%.
    highestlowest165th lowest of 343

2021 Census on the 2023 boundaries; each rule places this riding among all 343. Density is the census population over the riding's area.

IDid this riding change?

Yes. 95% of the 2025 electors in today's Thérèse-De Blainville lived in the old Thérèse-De Blainville; by area, 3% of the riding came from other ridings.

Share of today's electorsFormer riding
94.6%Thérèse-De Blainville 96.6% of the area
5.4%Terrebonne 3.2% of the area · 2% of it kept
0.0%Mirabel 0.1% of the area · under 0.1% of it kept
How this is measured. Electors: the share of the current riding's 2025 ordinary-list electors who lived in each former riding, each 2025 polling division placed in the 2013 riding a point inside it falls in. Area: the share of the current riding's area that came from each former riding, by intersecting the 2013 and 2023 boundary files, and how much of the former riding that part was. Area is land, not population. Elections Canada counts 48 of 343 ridings as entirely unchanged.

IIThe 2025 result

CandidatePartyVotes%2021±
Madeleine ChenetteLiberal29,51945.8%34.6%+11.2
Marie-Noëlle Closson-DuquetteBloc Québécois20,82832.3%40.2%−7.9
Julie BergeronConservative12,01918.7%10.9%+7.8
Michel LacroixNew Democratic1,5852.5%7.2%−4.7
1 further candidate, under 1% of the vote
Chantal LavoiePeople's4460.7%
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

Third place vs. the margin
12,019 votes
Conservative took more than the 8,691-vote margin. True in 100 of 343 ridings in 2025.
Election-day polls won by others
59 of 199
5 polls ended in an exact tie.
Fig. 2 — Each square is one election-day poll: ■ won by the Liberals (135) · ■ won by another party (59) · ▨ tied (5).
Flip the seatHypothetical

It would have taken 4,346 voters switching from Liberal to Bloc Québécois — 6.7% of the 64,397 valid votes, 6.8 points — to change the result. No ballot was cast this way; this only moves votes between the top two.

Liberal29,519
Bloc Québécois20,828
Still Liberal by 8,691 votes. Actual margin: 8,691.

IVElection day versus advance

Only 63.9% of this riding's votes were cast at election-day polls. The rest were advance or special ballots.

On election day the Liberals took 42.5%, the Bloc Québécois 32.6%, the Conservatives 21.4% and the New Democrats 2.7%; in advance and special ballots, 51.7%, 31.9%, 13.9% and 2.0%, in that order.

Share of the valid votes by party, election-day polls against advance and special ballots, Thérèse-De Blainville, April 28, 2025

Share of the valid votes by party, election-day polls against advance and special ballots, Thérèse-De Blainville, April 28, 2025On election day the Liberals took 42.5%, the Bloc Québécois 32.6%, the Conservatives 21.4% and the New Democrats 2.7%; in advance and special ballots, 51.7%, 31.9%, 13.9% and 2.0%, in that order.Election dayAdvance and special± pts, the gapLiberal42.5%51.7%+9.2 ptsBloc Québécois32.6%31.9%−0.7 ptsConservative21.4%13.9%−7.5 ptsNew Democratic2.7%2.0%−0.7 pts050%100%
Share of the valid votes by party, election-day polls against advance and special ballots, Thérèse-De Blainville, April 28, 2025On election day the Liberals took 42.5%, the Bloc Québécois 32.6%, the Conservatives 21.4% and the New Democrats 2.7%; in advance and special ballots, 51.7%, 31.9%, 13.9% and 2.0%, in that order.Election dayAdvance and special± pts, the gapLiberal42.5%51.7%+9.2 ptsBloc Québécois32.6%31.9%−0.7 ptsConservative21.4%13.9%−7.5 ptsNew Democratic2.7%2.0%−0.7 pts050%100%
Shares of the valid votes cast at election-day polls, and of those cast at advance polls, at mobile polls and by special ballot; the gap is the second less the first, in points. Source: Elections Canada, poll-by-poll results, the 2025 general election.
The figures
PartyElection dayAdvance and specialGap
Liberal42.5%51.7%+9.2
Bloc Québécois32.6%31.9%−0.7
Conservative21.4%13.9%−7.5
New Democratic2.7%2.0%−0.7
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.

VWhere it is

loading basemap…
Fig. 3 — Thérèse-De Blainville and its 6 neighbouring ridings.

Sources and citation

"Thérèse-De Blainville — federal riding profile and 2025 results." The Political Record. https://politicalrecord.ca/riding/therese-de-blainville/ Accessed 2026-11-10.

Results and transposition: Elections Canada. Boundaries: Elections Canada / Statistics Canada, Open Government Licence – Canada. Census: Statistics Canada 2021 Census. Member: House of Commons.

Figures reconcile to the certified national total of 19,641,663 votes. The member is as the House of Commons listed them on 2026-11-01. Page built 2026-11-10.