Mont-Saint-Bruno—L'Acadie

Mont-Saint-Bruno—L'Acadie (formerly Montarville, French pronunciation: [mɔ̃taʁvil]) is a federal electoral district in the Montérégie region of Quebec, Canada, that has been represented in the House of Commons of Canada since 2015.

Mont-Saint-Bruno—L'Acadie

Quebec electoral district
Interactive map of riding boundaries from the 2025 federal election
Federal electoral district
Legislature	House of Commons
MP	Bienvenu-Olivier Ntumba Liberal
District created	2013
First contested	2015
Last contested	2025
District webpage	profile, map
Demographics
Population (2016)	97,811
Electors (2019)	77,097
Area (km²)	158
Pop. density (per km²)	619.1
Census division(s)	Longueuil, Marguerite-D'Youville, La Vallée-du-Richelieu
Census subdivision(s)	Longueuil (part), Sainte-Julie, Saint-Bruno-de-Montarville, Saint-Basile-le-Grand, Carignan (part)

Montarville was created by the 2012 federal electoral boundaries redistribution and was legally defined in the 2013 representation order. It came into effect upon the call of the 2025 Canadian federal election. It was created out of parts of the electoral districts of Saint-Bruno—Saint-Hubert, Verchères—Les Patriotes and Chambly—Borduas.

The riding was renamed Mont-Saint-Bruno—L'Acadie by the 2023 representation order for Quebec. It gained Caignan from Beloeil—Chambly in the process.

Profile

Similarly to other South Shore ridings, Montarville has recently become more of a competition between the Bloc Québécois and the Liberals despite an NDP win in 2011 and strong showing in 2015. The wealthier city of Saint-Bruno-de-Montarville tends to be more Liberal, while the Bloc performs better in Longueuil and Sainte-Julie.

Demographics

According to the 2021 Canadian census, 2023 representation order

Racial groups: 88.0% White, 3.1% Black, 2.2% Latin American, 2.0% Arab, 1.1% Indigenous, 1.1% Chinese
Languages: 86.3% French, 6.5% English, 2.1% Spanish, 1.3% Arabic
Religions: 65.7% Christian (56.4% Catholic, 1.3% Christian Orthodox, 8.0% Other), 3.4% Muslim, 30.3% None
Median income: $51,200 (2020)
Average income: $64,300 (2020)

Members of Parliament

This riding has elected the following members of Parliament:

Parliament	Years	Member		Party
Montarville Riding created from Chambly—Borduas, Saint-Bruno—Saint-Hubert and Verchères—Les Patriotes
42nd	2015–2019		Michel Picard	Liberal
43rd	2019–2021		Stéphane Bergeron	Bloc Québécois
44th	2021–2025
Mont-Saint-Bruno—L'Acadie
45th	2025–present		Bienvenu-Olivier Ntumba	Liberal

Election results

Mont-Saint-Bruno—L'Acadie

2025 Canadian federal election
Party	Candidate	Votes	%	±%
	Liberal	Bienvenu-Olivier Ntumba	32,149	47.10	+12.99
	Bloc Québécois	Noémie Rouillard	23,947	35.09	–10.40
	Conservative	Nicolas Godin	9,335	13.68	+3.98
	New Democratic	Mirabelle Leins	1,590	2.33	–5.99
	Green	Maria Korpijaakko	833	1.22	+1.07
	People's	Patrick Rochon	397	0.58	–1.53
Total valid votes			68,251	98.74
Total rejected ballots			871	1.26	-0.46
Turnout			68,251	77.80	+4.06
Eligible voters			88,845
	Liberal notional gain from Bloc Québécois		Swing		+11.69
Source: Elections Canada

2021 federal election redistributed results
Party		Vote	%
	Bloc Québécois	28,528	45.49
	Liberal	21,397	34.12
	Conservative	6,080	9.69
	New Democratic	5,216	8.32
	People's	1,322	2.11
	Green	95	0.15
	Free	51	0.08
	Marijuana	14	0.02
	Rhinoceros	10	0.02
	Indépendance du Québec	6	0.01
Total valid votes		62,719	98.28
Rejected ballots		1,110	1.72
Registered voters/ estimated turnout		86,542	73.74

Montarville

2021 Canadian federal election: Montarville
Party	Candidate	Votes	%	±%	Expenditures
	Bloc Québécois	Stéphane Bergeron	26,011	45.3	+2.5	$26,513.08
	Liberal	Marie-Ève Pelchat	19,974	34.8	-0.8	$56,659.78
	Conservative	Julie Sauvageau	5,460	9.5	+2.5	$4,343.53
	New Democratic	Djaouida Sellah	4,809	8.4	±0.0	$596.30
	People's	Natasha Hynes	1,218	2.1	+1.3	$1,269.78
Total valid votes/expense limit			57,472	98.2	–	$110,040.39
Total rejected ballots			1,033	1.8
Turnout			58,505	74.7
Eligible voters			78,273
	Bloc Québécois hold		Swing		+1.7
Source: Elections Canada

2019 Canadian federal election: Montarville
Party	Candidate	Votes	%	±%	Expenditures
	Bloc Québécois	Stéphane Bergeron	25,366	42.8	+14.38	$22,609.89
	Liberal	Michel Picard	21,061	35.6	+3.06	$55,495.41
	New Democratic	Djaouida Sellah	4,984	8.4	-16.28	$1,715.58
	Conservative	Julie Sauvageau	4,138	7.0	-3.85	$11,784.17
	Green	Jean-Charles Pelland	2,967	5.0	+2.6	$3,869.64
	People's	Julie Lavallée	501	0.8	–	none listed
	Rhinoceros	Thomas Thibault-Vincent	211	0.4	–	$0.00
Total valid votes/expense limit			59,228	100
Total rejected ballots			742
Turnout			59,970	77.8%
Eligible voters			77,097
	Bloc Québécois gain from Liberal		Swing		+5.66
Source: Elections Canada

2015 Canadian federal election
Party	Candidate	Votes	%	±%	Expenditures
	Liberal	Michel Picard	18,848	32.54	+20.03	–
	Bloc Québécois	Catherine Fournier	16,460	28.42	-0.66	–
	New Democratic	Djaouida Sellah	14,296	24.68	-19.85	–
	Conservative	Stéphane Duranleau	6,284	10.85	+1.25	–
	Green	Olivier Adam	1,388	2.40	-0.05	–
	Libertarian	Claude Leclair	641	1.11	–	–
Total valid votes/Expense limit			57,917	100.00		$207,758.92
Total rejected ballots			881	1.50	–
Turnout			58,798	77.86	–
Eligible voters			75,521
	Liberal gain from New Democratic		Swing		+19.94
Source: Elections Canada

2011 federal election redistributed results
Party		Vote	%
	New Democratic	23,227	44.53
	Bloc Québécois	15,166	29.08
	Liberal	6,524	12.51
	Conservative	5,007	9.60
	Green	1,278	2.45
	Independent	959	1.84

See also

• List of Canadian electoral districts
• Historical federal electoral districts of Canada