Mont-Saint-Bruno—L'Acadie

Mont-Saint-Bruno—L'Acadie (formerly Montarville) 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
Montarville from the 2015 federal election to 2025 Mont-Saint-Bruno—L’Acadie from the 2025 federal election Interactive map of riding boundaries
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)[1]	97,811
Electors (2019)	77,097
Area (km²)[1]	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 42nd Canadian federal election, scheduled for 19 October 2015.^[2] It was created out of parts of the electoral districts of Saint-Bruno—Saint-Hubert, Verchères—Les Patriotes and Chambly—Borduas.^[3]

The riding was renamed Mont-Saint-Bruno—L'Acadie by the 2023 representation order for Quebec, which will come into effect at the next federal election.^[4]

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 and more Anglophone 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 2016 Canadian census

• Languages: (2016) 89.5% French, 4.4% English, 1.5% Spanish, 0.5% Romanian, 0.4% Portuguese, 0.3% Creole, 0.3% Italian, 0.2% Persian, 0.2% Russian, 0.2% Mandarin^[5]

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

v t e 2025 Canadian federal election
** Preliminary results — Not yet official **
Party	Candidate	Votes	%	±%	Expenditures
	Liberal	Bienvenu-Olivier Ntumba	32,039	46.95	+12.83
	Bloc Québécois	Noémie Rouillard	23,866	34.97	–10.52
	Conservative	Nicolas Godin	9,275	13.59	+3.90
	New Democratic	Mirabelle Leins	1,843	2.70	–5.62
	Green	Maria Korpijaakko	825	1.21	+1.06
	People's	Patrick Rochon	397	0.58	–1.53
Total valid votes/expense limit
Total rejected ballots
Turnout			68,245	76.94
Eligible voters			88,696
	Liberal notional gain from Bloc Québécois		Swing		+11.68
Source: Elections Canada[6][7]

2021 federal election redistributed results[8]
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
	Others	81	0.13

Montarville

v t e 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[9]

v t e 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[10][11]

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[12][13]

2011 federal election redistributed results[14]
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