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The Political RecordFederal electoral districtsNo. 24017Quebec

Châteauguay—Les Jardins-de-Napierville

Châteauguay—Les Jardins-de-Napierville is a federal riding in Quebec. Nathalie Provost (Liberal) has represented Châteauguay—Les Jardins-de-Napierville since the 2025 election. Nathalie Provost (Liberal) took Châteauguay—Les Jardins-de-Napierville from the Bloc Québécois in the 2025 election by 10,064 votes (16.1 points), with 45.2% of the vote. Patrick O'Hara (Bloc Québécois) was second with 29.1%, on a turnout of 69.3% of 91,599 electors. Member as of .

Vallée-du-Haut-Saint-Laurent · Bloc QuébécoisDorval—Lachine—LaSalle · LiberalLa Prairie—Atateken · LiberalLac-Saint-Louis · LiberalSaint-Jean · Bloc QuébécoisVaudreuil · LiberalChâteauguay—Les Jardins-de-Napierville
Fig. 1 — Châteauguay—Les Jardins-de-Napierville on the board, 2023 boundaries; the ridings next door as the House holds them on . Open it on the board →

Who represents Châteauguay—Les Jardins-de-Napierville

LNathalie Provost
Nathalie Provost's piece from the board. Illustration after the official portrait © House of Commons.

Nathalie Provost

Member of Parliament for Châteauguay—Les Jardins-de-Napierville

Liberal

MP since · first term

  • Secretary of State (Nature)

100 speeches in the 45th Parliament, most often on The Economy.

Contact and office · House of Commons →

The 2025 result: Liberal gain from the Bloc Québécois

Share of the valid votes by candidate, Châteauguay—Les Jardins-de-Napierville, April 28, 2025

Share of the valid votes by candidate, Châteauguay—Les Jardins-de-Napierville, April 28, 2025Of the 62,501 valid votes, Nathalie Provost (Liberal) took 45.2%, Patrick O'Hara (Bloc Québécois) 29.1%, David De Repentigny (Conservative) 21.7%, Hannah Wolker (New Democratic) 2.2% and Martine Desrochers (Green) 1.2%; one other candidate took 0.7%.2025Turnout 69.3% of 91,599 electorsNathalie ProvostLiberal45.2% · 28,22410,064 votes ahead · 16.1 ptsPatrick O'HaraBloc Québécois29.1% · 18,160David De RepentignyConservative21.7% · 13,538Hannah WolkerNew Democratic2.2% · 1,377Martine DesrochersGreen1.2% · 773Other (1)0.7% · 429050%100%
Share of the valid votes by candidate, Châteauguay—Les Jardins-de-Napierville, April 28, 2025Of the 62,501 valid votes, Nathalie Provost (Liberal) took 45.2%, Patrick O'Hara (Bloc Québécois) 29.1%, David De Repentigny (Conservative) 21.7%, Hannah Wolker (New Democratic) 2.2% and Martine Desrochers (Green) 1.2%; one other candidate took 0.7%.2025Turnout 69.3% of 91,599 electorsNathalie ProvostLiberal45.2% · 28,22410,064 votes ahead · 16.1 ptsPatrick O'HaraBloc Québécois29.1% · 18,160David De RepentignyConservative21.7% · 13,538Hannah WolkerNew Democratic2.2% · 1,377Martine DesrochersGreen1.2% · 773Other (1)0.7% · 429050%100%
Shares of the 62,501 valid votes; a candidate under 1% is counted with the others. Source: Elections Canada, official voting results, the 2025 general election.
The figures
CandidatePartyVotesShare
Nathalie ProvostLiberal28,22445.2%
Patrick O'HaraBloc Québécois18,16029.1%
David De RepentignyConservative13,53821.7%
Hannah WolkerNew Democratic1,3772.2%
Martine DesrochersGreen7731.2%
Other (1)4290.7%

Nathalie Provost (Liberal) won Châteauguay—Les Jardins-de-Napierville on with 28,224 votes, 45.2% of the 62,501 valid votes. Patrick O'Hara (Bloc Québécois) was second with 18,160 (29.1%), 10,064 votes and 16.1 points behind.

Of the 62,501 valid votes, Nathalie Provost (Liberal) took 45.2%, Patrick O'Hara (Bloc Québécois) 29.1%, David De Repentigny (Conservative) 21.7%, Hannah Wolker (New Democratic) 2.2% and Martine Desrochers (Green) 1.2%; one other candidate took 0.7%. Turnout was 69.3% of 91,599 electors: 63,476 ballots cast, 62,501 of them valid, for 6 candidates.

Since 2021

Against the 2021 result on these boundaries, the Liberals are up 9.5 (35.7% to 45.2%), the Bloc Québécois down 6.7 (35.8% to 29.1%), the Conservatives up 9.8 (11.9% to 21.7%), the New Democrats down 5.5 (7.7% to 2.2%) and the Greens down 0.3 (1.5% to 1.2%), 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 Châteauguay—Les Jardins-de-Napierville at each general election, 2004 to 2025, on today's boundaries

  1. 2004Bloc Québécois54.6%by 22.7 points over the Liberals
  2. 2006Bloc Québécois49.8%by 27.0 points over the Conservatives
  3. 2008Bloc Québécois47.4%by 28.6 points over the Conservatives
  4. 2011changed handsNew Democratic48.7%by 19.4 points over the Bloc Québécois
  5. 2015changed handsLiberal38.2%by 13.4 points over the Bloc Québécois
  6. 2019†changed handsBloc Québécois38.2%by 0.6 points over the Liberals
  7. 2021Bloc Québécois35.8%by 0.1 points over the Liberals
  8. 2025changed handsLiberal45.2%by 16.1 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 first two are within two points, so which party was first is less certain.
The figures
YearFirstShareSecondMargin (pts)Basis
2004Bloc Québécois54.6%Liberal22.7carried, our estimate
2006Bloc Québécois49.8%Conservative27.0carried, our estimate
2008Bloc Québécois47.4%Conservative28.6carried, our estimate
2011New Democratic48.7%Bloc Québécois19.4carried, our estimate
2015Liberal38.2%Bloc Québécois13.4carried, our estimate
2019†Bloc Québécois38.2%Liberal0.6carried, our estimate
2021Bloc Québécois35.8%Liberal0.1transposed by Elections Canada
2025Liberal45.2%Bloc Québécois16.1official 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 45.2% of the vote here, 18.6 points above their average of 26.6% at the seven general elections from 2004 to 2021.

On today's boundaries the Bloc Québécois were first here in 2004 (54.6%), 2006 (49.8%), 2008 (47.4%), 2019 (38.2%) and 2021 (35.8%), the NDP in 2011 (48.7%) and the Liberals in 2015 (38.2%) and 2025 (45.2%), 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. In 2019 the carried top two are within two points, so which party was first is less certain.

Before 2025
  • 2021 Liberal · Brenda Shanahan, by 12 votes (0.0 pts)
  • 2019 Liberal · Brenda Shanahan, by 639 votes (1.2 pts)
  • 2015 Liberal · Brenda Shanahan, by 7,630 votes (14.7 pts)

In Châteauguay—Lacolle on the 2013 boundaries, the riding most of the 2025 electors in today's Châteauguay—Les Jardins-de-Napierville lived in; Elections Canada's official results.

What kind of place Châteauguay—Les Jardins-de-Napierville is

Population
114,9452021 census
Area
1,554km²
Density
74people per km²
Electors
91,599on 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 71.6% — about 44.7 times the median riding's 1.6%.
    highestlowest54th highest of 343
  • Share aged 25-64 with a bachelor's degree or higher is 18.1% — about 64 percent of the median riding's 28.2%.
    highestlowest69th lowest of 343
  • Share of households that own their home is 74.2% — a little higher than the median riding's 71.4%.
    highestlowest129th highest of 343
  • Share who are immigrants is 12.3% — about 71 percent of the median riding's 17.3%.
    highestlowest136th lowest of 343
  • Median age is 41.6 — about the same as the median riding's 41.6.
    highestlowest163rd highest of 343
  • Median total household income is $82,000 — about the same as the median riding's $84,000.
    highestlowest167th 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. 91% of the 2025 electors in today's Châteauguay—Les Jardins-de-Napierville lived in the old Châteauguay—Lacolle; by area, 37% of the riding came from other ridings.

Share of today's electorsFormer riding
90.6%Châteauguay—Lacolle 62.7% of the area
9.4%Salaberry—Suroît 37.3% of the area · 24% 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±
Nathalie ProvostLiberal28,22445.2%35.7%+9.5
Patrick O'HaraBloc Québécois18,16029.1%35.8%−6.7
David De RepentignyConservative13,53821.7%11.9%+9.8
Hannah WolkerNew Democratic1,3772.2%7.7%−5.5
Martine DesrochersGreen7731.2%1.5%−0.3
1 further candidate, under 1% of the vote
Nicolas GuérinPeople's4290.7%
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
13,538 votes
Conservative took more than the 10,064-vote margin. True in 100 of 343 ridings in 2025.
Election-day polls won by others
85 of 216
5 polls ended in an exact tie.
Fig. 2 — Each square is one election-day poll: ■ won by the Liberals (126) · ■ won by another party (85) · ▨ tied (5).
Flip the seatHypothetical

It would have taken 5,033 voters switching from Liberal to Bloc Québécois — 8.1% of the 62,501 valid votes, 8.1 points — to change the result. No ballot was cast this way; this only moves votes between the top two.

Liberal28,224
Bloc Québécois18,160
Still Liberal by 10,064 votes. Actual margin: 10,064.

IVElection day versus advance

Only 64.4% of this riding's votes were cast at election-day polls. The rest were advance or special ballots.

On election day the Liberals took 41.2%, the Bloc Québécois 29.7%, the Conservatives 24.4%, the New Democrats 2.4% and the Greens 1.5%; in advance and special ballots, 52.2%, 27.9%, 16.7%, 1.8% and 0.8%, in that order.

Share of the valid votes by party, election-day polls against advance and special ballots, Châteauguay—Les Jardins-de-Napierville, April 28, 2025

Share of the valid votes by party, election-day polls against advance and special ballots, Châteauguay—Les Jardins-de-Napierville, April 28, 2025On election day the Liberals took 41.2%, the Bloc Québécois 29.7%, the Conservatives 24.4%, the New Democrats 2.4% and the Greens 1.5%; in advance and special ballots, 52.2%, 27.9%, 16.7%, 1.8% and 0.8%, in that order.Election dayAdvance and special± pts, the gapLiberal41.2%52.2%+11.0 ptsBloc Québécois29.7%27.9%−1.8 ptsConservative24.4%16.7%−7.7 ptsNew Democratic2.4%1.8%−0.6 ptsGreen1.5%0.8%−0.7 pts050%100%
Share of the valid votes by party, election-day polls against advance and special ballots, Châteauguay—Les Jardins-de-Napierville, April 28, 2025On election day the Liberals took 41.2%, the Bloc Québécois 29.7%, the Conservatives 24.4%, the New Democrats 2.4% and the Greens 1.5%; in advance and special ballots, 52.2%, 27.9%, 16.7%, 1.8% and 0.8%, in that order.Election dayAdvance and special± pts, the gapLiberal41.2%52.2%+11.0 ptsBloc Québécois29.7%27.9%−1.8 ptsConservative24.4%16.7%−7.7 ptsNew Democratic2.4%1.8%−0.6 ptsGreen1.5%0.8%−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
Liberal41.2%52.2%+11.0
Bloc Québécois29.7%27.9%−1.8
Conservative24.4%16.7%−7.7
New Democratic2.4%1.8%−0.6
Green1.5%0.8%−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 — Châteauguay—Les Jardins-de-Napierville and its 6 neighbouring ridings.

Sources and citation

"Châteauguay—Les Jardins-de-Napierville — federal riding profile and 2025 results." The Political Record. https://politicalrecord.ca/riding/chateauguay-les-jardins-de-napierville/ 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.