Photo: Veillg1 · CC0In 2021, Argenteuil—La Petite-Nation went by only 1,529 votes, narrower than in 94% of ridings
Bernard Bigras-Denis leads Lachute as mayor, alongside 6 councillors. Lachute is in Argenteuil—La Petite-Nation, its riding (a federal electoral district, which elects one MP), and the seat belongs to Stéphane Lauzon of the Liberal Party of Canada. For the National Assembly of Québec, Lachute votes in Argenteuil; open data doesn’t yet say who its MNA (Member of the National Assembly, Québec’s legislature) is.
What stands out in how Lachute is governed
Many residents per seat
Lachute council has more people behind each seat than most of Quebec, where the middle figure is 380 residents a seat. Council size ↓
A close federal race
The 2021 winner in Argenteuil—La Petite-Nation finished 3 points ahead of the runner-up (Bloc Québécois), a closer race than 94% of Canada’s 338 ridings. How Lachute has voted ↓
Low federal turnout
In 2021, Argenteuil—La Petite-Nation voted in smaller numbers than 66% of the ridings. The 2021 turnout ↓
Compared with the province’s municipalities of 1,000+ residents (2021 Census; MAMH, MMAH and Statistics Canada).
Three governments, and who does what
Lachute, a city in Quebec, shares the work with the province and Ottawa.
Local services, by-laws and property tax.
lachute.ca ↗Land-use, waste and fire-cover plans.
Schools, health care, highways, municipal law.
assnat.qc.ca ↗Passports, pensions, EI, defence, immigration.
ourcommons.ca ↗Who to ask
Green: municipal. Gold: provincial. Grey: federal.
MRC Argenteuil is Lachute’s regional county municipality, which sets the land-use plan the municipalities follow.
From the council table to Ottawa
Every elected tier that speaks for Lachute, from the most recent elections.
- 1Lachute councilelected November 2025Bernard Bigras-Denis
- 2National Assembly of QuébecArgenteuil
- 3House of CommonsArgenteuil—La Petite-Nation
Party colours are neutral on purpose: they tell parties apart and aren’t the parties’ own. MPs: Wikidata (CC0), 45th Parliament statements, read 7 November 2026; ridings: 2023 Representation Order, Statistics Canada
Who sits on Lachute council
Everyone elected in 2025, seat by seat, with their team and votes.
- Bernard Bigras-Denis
- Aline Gravel
- Yan Deschamps
- Christian David
- Line Perron
- Guylaine Cyr Desforges
- Hugo Lajoie
7 members and how they were elected
| Name | Seat | Team | Votes | Share | On the last council |
|---|---|---|---|---|---|
| Bernard Bigras-Denis | Mayor | Équipe vision Lachute | 3,013 | 81% | Yes |
| Aline Gravel | Councillor | Équipe vision Lachute | 495 | 71% | Yes |
| Yan Deschamps | Councillor | Équipe vision Lachute | 516 | 82% | No |
| Christian David | Councillor | Équipe vision Lachute | – | acclaimed | Yes |
| Line Perron | Councillor | Équipe vision Lachute | 389 | 68% | No |
| Guylaine Cyr Desforges | Councillor | Équipe vision Lachute | – | acclaimed | Yes |
| Hugo Lajoie | Councillor | Équipe vision Lachute | 428 | 75% | Yes |
Every member of the council ran for Équipe vision Lachute. Each electoral district elects one councillor; the mayor is chosen by all of Lachute.
Every other candidate (5)
| Seat | Candidate | Team | Votes | Share |
|---|---|---|---|---|
| Mayor | Francis Karl Dubé | Independent | 687 | 19% |
| Councillor | Nathalie Vigeant | Independent | 203 | 29% |
| Councillor | Jean-François Crépeault | Independent | 117 | 19% |
| Councillor | Alain Lanoue | Independent | 180 | 32% |
| Councillor | Luc Dubé | Independent | 145 | 25% |
Councils and results: Résultats des élections municipales générales de 2025, MAMH (CC BY 4.0)
The 2025 race for mayor of Lachute
Votes for each candidate for mayor in 2025.
Bernard Bigras-Denis held on to the mayor’s seat. A lead of 2,326 votes over Francis Karl Dubé gave Bernard Bigras-Denis the mayor’s seat, with 81% of the votes. Only 31% of electors took part in the vote for mayor, against a Québec median of 51% for contested mayoral races.
How Lachute voted: same source as Councillors, above.
When Lachute votes
The last and next general elections at each level; a by-election can come in between.
| Election | Last | Next |
|---|---|---|
| Lachute council | 2 November 2025 | 4 November 2029 |
| National Assembly of Québec | 5 October 2026 | – |
| House of Commons | 28 April 2025 | – |
The National Assembly of Québec was last elected on 5 October 2026, and the House of Commons on 28 April 2025. Lachute votes next on 4 November 2029: the Act respecting elections and referendums in municipalities sets municipal elections on the first Sunday in November every four years. Why not 2025? Elections Canada publishes those counts under non-commercial terms, and its open data stop at the 2021 election.
Election dates: the legislatures, MMAH and MAMH
Lachute votes in Argenteuil for the National Assembly of Québec
Provinces and territories run schools, health care and municipal law; each riding elects one MNA.
MNA: see the legislature’s list
assnat.qc.ca ↗Argenteuil takes in Lachute and elects its MNA to the National Assembly of Québec.
Québec ridings: Répertoire des municipalités, MAMH (CC BY 4.0)
Stéphane Lauzon represents Argenteuil—La Petite-Nation in Ottawa
Each riding elects one MP to the House of Commons; the general election of 28 April 2025 chose the 45th Parliament.
Argenteuil—La Petite-Nation · Liberal Party of Canada · first elected 2015
en.wikipedia.org ↗- Liberal Party of Canada44
- Bloc Québécois22
- Conservative Party of Canada11
- New Democratic Party1
As Wikidata records them.
Of the 78 MPs from Quebec, 44 are with the Liberal Party of Canada, Stéphane Lauzon among them.
The MP’s record
Stéphane Lauzon has sat in the Commons since 2015, now for the 4th Parliament. Had the 2021 ballots been cast in today’s Argenteuil—La Petite-Nation, the Liberal Party of Canada would have led with 39%; Stéphane Lauzon held it for them in 2025. Before Ottawa, Stéphane Lauzon was a Gatineau city councillor.
MPs: Wikidata (CC0), 45th Parliament statements, read 7 November 2026; ridings: 2023 Representation Order, Statistics Canada · MPs’ records: Wikidata (CC0), positions held and party memberships, read 8 November 2026
Stéphane Lauzon kept Argenteuil—La Petite-Nation for the Liberal Party of Canada in 2021
Argenteuil—La Petite-Nation as it stood from 2013: the 2019 and 2021 counts, before the riding was redrawn for 2025.
The 2021 count in Argenteuil—La Petite-Nation put Stéphane Lauzon (Liberal Party of Canada) first at 38%, with Yves Destroismaisons (Bloc Québécois) 1,529 votes back. Stéphane Lauzon already held it after the 2019 election, won with 38%.
All 6 candidates in Argenteuil—La Petite-Nation, 2021
| Candidate | Party | Votes | Share |
|---|---|---|---|
| Stéphane Lauzon | Liberal Party of Canada | 19,371 | 38.3% |
| Yves Destroismaisons | Bloc Québécois | 17,842 | 35.3% |
| Marie Louis-Seize | Conservative Party of Canada | 6,547 | 12.9% |
| Michel Welt | New Democratic Party | 3,390 | 6.7% |
| Marc Vachon | People's Party of Canada | 2,777 | 5.5% |
| Paul Lynes | Free Party Canada | 686 | 1.4% |
Federal results: Elections Canada, 43rd and 44th general elections and the 44th’s transposition to the 2023 ridings, via open.canada.ca. Contains information licensed under the Open Government Licence – Canada
Lachute council spends less per resident than most
The 2024 financial return: spending by service and revenue by source, per resident, compared only with Québec’s local municipalities.
Spending per resident by service, 2024
What pays for it
Shares of revenue, town and province.
No service costs more than water, sewers and waste, at $533 per resident and 24% of the total. Salaries and benefits took 38% of the total. Spending by Lachute council came to $2,244 a resident in 2024, under the $2,394 median of Québec’s local municipalities. Lachute council’s borrowing is on the heavy side: $42.3M long term, $2,833 a resident where the median is $2,461. At 77%, property taxes count for more of the revenue than the 63% seen across the province.
Spending per resident nearby
Every service line, 2024
| Service | 2024 | Per resident | Share |
|---|---|---|---|
| Water, sewers and waste | $8M | $533 | 24% |
| Roads and transit | $7.1M | $475 | 21% |
| Recreation and culture | $5.5M | $370 | 17% |
| Police, fire and protection | $5.5M | $368 | 16% |
| General government | $4.9M | $328 | 15% |
| Financing costs | $1.3M | $90 | 4% |
| Planning and development | $1.1M | $73 | 3% |
| Social services and child care | $99K | $7 | 0% |
Money: rapport financier and profil financier 2024, ministère des Affaires municipales et de l’Habitation (CC BY 4.0)
One seat for every 2,210 residents
Residents (2021 Census) per council seat, head of council included, beside nearby municipalities; the tick is the provincial median.
With 2,210 residents behind each seat, Lachute council sits above 89% of Quebec municipalities.
Residents: 2021 Census; seats: the province’s council list
Having a say in how Lachute is run
Check or update the federal list.
elections.ca ↗Every MP lists an office.
ourcommons.ca ↗Ridings, registration and voting dates.
electionsquebec.qc.ca ↗Council meetings, agendas and services.
lachute.ca ↗What this data can and can’t tell you
- Council money. MAMH’s 2024 financial report, consolidated: charges by service, with revenue, debt and reserves from the financial profile, per resident with MAMH’s own population.
- Council size. Seats count the head of council and the councillors, and residents are the 2021 Census count; a neighbourhood shows its city’s.
- Election results. Where the page says “today’s boundaries”, it means Elections Canada’s estimate of the 2021 vote on the 2023 ridings; every other count is official and on the 2013 map.
- Which riding. Where residents of the 2021 Census live decides the riding; any riding with 5% of them or more is named.
- Who holds each seat. Wikidata, edited by volunteers, is the source for each MP, and it can trail a change of seat by a little.
- Not on this page. The open files end at election night: no council votes since, and no band councils.
Questions about how Lachute is run
Who is the MP for Lachute?
Stéphane Lauzon (Liberal Party of Canada) sits for Argenteuil—La Petite-Nation, the riding Lachute is in.
Which party won Lachute in the 2021 federal election?
In 2021 it was Stéphane Lauzon (Liberal Party of Canada), who represents Argenteuil—La Petite-Nation still.
Who is the MNA for Lachute?
Lachute votes in Argenteuil; the National Assembly of Québec’s members page gives its current MNA.
Who heads the council in Lachute?
Bernard Bigras-Denis is mayor, at the head of Lachute council.
How much does Lachute council spend?
Lachute council spent $33.5M in 2024 for about 14,941 residents; its largest service line was water, sewers and waste, at $8M.
Which regional body is Lachute part of?
Lachute belongs to MRC Argenteuil, a regional county municipality whose council is made up of its municipalities’ mayors.
How is Lachute council elected?
One councillor a district, and a mayor chosen by everyone, on Lachute council.
Sources: MPs: Wikidata (CC0), 45th Parliament statements, read 7 November 2026; ridings: 2023 Representation Order, Statistics Canada · Québec ridings: Répertoire des municipalités, MAMH (CC BY 4.0) · Councils: Répertoire des municipalités du Québec, MAMH (CC BY 4.0) · Money: rapport financier and profil financier 2024, ministère des Affaires municipales et de l’Habitation (CC BY 4.0) · Councils and results: Résultats des élections municipales générales de 2025, MAMH (CC BY 4.0) · Next municipal election: the province’s municipal election act · Municipality types: Statistics Canada census subdivisions · Federal results: Elections Canada, 43rd and 44th general elections and the 44th’s transposition to the 2023 ridings, via open.canada.ca. Contains information licensed under the Open Government Licence – Canada · MPs’ records: Wikidata (CC0), positions held and party memberships, read 8 November 2026. Under the Statistics Canada Open Licence.
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).