Thérèse-De Blainville

Thérèse-De Blainville is a suburban riding in Quebec's Laurentides region, situated immediately north of Laval on the north shore of the Rivière des Mille-Îles. The riding encompasses the cities and towns of Sainte-Thérèse, Blainville, Boisbriand, Rosemère, Lorraine, and Bois-des-Filion within the Thérèse-De Blainville regional county municipality. Created in 2003 from parts of the former ridings of Terrebonne—Blainville and Marc-Aurèle-Fortin, the constituency is named for its two largest communities. The riding is densely populated and almost entirely suburban—residential neighbourhoods, commercial strips, and light industrial zones characterize the landscape. The population is predominantly francophone.

Candidates

Louise Chabot (Bloc Québécois) — A veteran labour activist, Chabot spent over thirty years in the union movement, culminating in her tenure as president of the Centrale des syndicats du Québec from 2012 to 2018. A self-described lifelong sovereigntist, she was first elected to Parliament in the 2019 federal election and served as the Bloc's critic for human resources, skills development, social development, and persons with disabilities.

Ramez Ayoub (Liberal) — An economist by training with a degree from the Université de Montréal, Ayoub worked as a real estate broker and spent ten years on the city council of Lorraine before being elected mayor of that municipality in 2009. He also served as deputy prefect of the Thérèse-De Blainville regional county municipality. He won the riding for the Liberals in the 2015 federal election but lost it to Chabot in 2019.

Marc Bissonnette (Conservative) — Bissonnette carried the Conservative Party banner in the riding in 2021.

Julienne Soumaoro (NDP) — A teacher since 1976 and a former secondary school director, Soumaoro holds a master's degree in education focused on obstacles to women's education. She was recognized in 2014 for her contributions to the integration of immigrant and marginalized communities and had previously run for the NDP in Joliette in 2019.

About the Riding

Thérèse-De Blainville sits squarely in Montreal's northern commuter belt. The communities that make up the riding experienced rapid population growth in the late twentieth century as Montreal-area families moved to the suburbs in search of larger homes and quieter neighbourhoods. Sainte-Thérèse, the oldest of the municipalities, retains a small-town historic core with a collegiate tradition—the Cégep Lionel-Groulx has been a significant local institution. Blainville and Boisbriand are more recently developed, with newer residential subdivisions and commercial parks.

The Autoroute des Laurentides (Highway 15) runs along the riding's western boundary, and the commuter rail line connecting the area to downtown Montreal has been a key factor in the riding's residential growth. Despite its suburban character, the riding retains pockets of older agricultural land on its northern fringes.

Politically, Thérèse-De Blainville has been competitive territory. The Liberals held the seat from 2015 to 2019 with Ramez Ayoub, but the Bloc Québécois recaptured it in 2019 as part of the party's broader resurgence across suburban Quebec under Yves-François Blanchet's leadership. The riding's suburban, middle-class electorate has swung between federalist and sovereigntist options depending on the national political climate, making it a bellwether for Bloc fortunes in the Montreal commuter suburbs.