Montcalm

Located northeast of Montreal in the Lanaudière region, the federal riding of Montcalm takes in the Montcalm Regional County Municipality, the city of Mascouche, and the districts of La Plaine and Lachenaie within the city of Terrebonne. The riding stretches from the urbanizing southern fringe of the greater Montreal commuter belt into the more rural parishes and villages of the Lanaudière interior. Since 2011, the seat had been held by the NDP's Manon Perreault, who was suspended from the NDP caucus in 2014 after being charged with public mischief, and subsequently sat as an independent.

Candidates

Luc Thériault (Bloc Québécois) — A philosophy professor at Collège de Maisonneuve from 1985 to 2003, Thériault held a bachelor's degree in philosophy and a master's in political philosophy from UQAM, along with a diploma in bioethics from the Université de Montréal. He had previously served as a Parti Québécois member of Quebec's National Assembly for Masson from 2003 to 2007, and had worked as a special advisor to Bloc Québécois leader Mario Beaulieu in 2014 and 2015.

Louis-Charles Thouin (Liberal) — Thouin was serving as mayor of Saint-Calixte at the time of the election, a position he had held since 2009, giving him deep familiarity with the municipal concerns of the riding's smaller communities.

Martin Leclerc (NDP) — A well-known sports journalist and commentator at Radio-Canada, Leclerc resigned his broadcasting position to seek the NDP nomination in Montcalm. He described himself as having long held progressive political convictions and said the NDP aligned with his personal values.

Gisèle DesRoches (Conservative) — A human resources consultant specializing in compensation management and pay equity, DesRoches had lived in Mascouche for more than two decades.

Manon Perreault (Forces et Démocratie) — The outgoing MP for Montcalm, Perreault had been elected under the NDP banner in 2011 but was expelled from caucus in June 2014 following mischief charges. She joined the fledgling Forces et Démocratie party in August 2015 for her re-election bid.

About the Riding

Montcalm straddles two distinct worlds: the rapidly suburbanizing southern municipalities of Mascouche, La Plaine, and Lachenaie, which function as bedroom communities for Montreal commuters, and the quieter rural towns of the Montcalm MRC to the north, including Sainte-Julienne, Saint-Calixte, and Saint-Lin–Laurentides. The population of the Montcalm MRC was approximately 50,000 at the time, while Mascouche alone had grown past 45,000 residents. Growth pressures, commuter rail service, and highway congestion on routes into Montreal were persistent local issues. The riding is predominantly francophone, and Quebec sovereignty remained a live political question in Lanaudière during the 2015 campaign. Opposition to the Energy East pipeline and concerns about federal transfers for health care also figured in local debates.