Terrebonne

Terrebonne is a federal riding consisting entirely of the city of Terrebonne, an off-island suburb of Montreal on the north shore of the Riviere des Mille-Iles in the Lanaudiere region. With a population of roughly 120,000 as of the 2021 census, Terrebonne is one of the largest and fastest-growing municipalities in the greater Montreal area, divided into three sectors: the historic Vieux-Terrebonne, Lachenaie, and La Plaine. The riding was created through the 2012 redistribution from parts of the former Terrebonne--Blainville and Montcalm districts. Over 90 percent of residents are francophone, and the riding has a suburban, middle-class character oriented toward young families and commuters who travel to Montreal and Laval for work.

Candidates

Tatiana Auguste (Liberal) -- Born in Port-au-Prince, Haiti in 2001, Auguste immigrated to Canada with her family in 2008, settling in Montreal. She studied economics at Concordia University and worked as an e-commerce consultant for the Federation des chambres de commerce du Quebec before serving as an assistant to Liberal MP Emmanuel Dubourg. At 23, she was one of the youngest candidates in the country. Her election was decided by the narrowest margin in Canada -- a single vote after a judicial recount -- though the Supreme Court of Canada subsequently annulled the result due to a printing error by Elections Canada on a mail-in ballot return envelope.

Nathalie Sinclair-Desgagne (Bloc Quebecois) -- Born in 1988, Sinclair-Desgagne holds an economics degree from McGill University and a master's degree from the University of Oxford. Before entering politics, she worked at the European Investment Bank, at PwC in London, and at Deloitte before returning to Quebec in 2017 to serve as a senior economic advisor to the general management of the City of Montreal. First elected in Terrebonne in 2021, she served as the Bloc's critic for public finances and pandemic programs.

Adrienne Charles (Conservative) -- Charles carried the Conservative banner in Terrebonne, campaigning on the party's national platform of affordability, fiscal responsibility, and immigration reform.

Maxime Beaudoin (NDP) -- A union advisor at APTS, a union representing workers in the health and social services sector, Beaudoin has been involved in federal, provincial, and municipal politics since 2005. Originally from Laval, he campaigned on housing, purchasing power, and healthcare access.

Benjamin Rankin (Green Party) -- Rankin represented the Green Party of Canada in Terrebonne, running on the party's platform of environmental protection and climate action.

Maria Cantore (People's Party) -- Cantore carried the PPC banner in the riding, running on the party's platform of reduced government spending and lower immigration.

About the Riding

Terrebonne has transformed rapidly from a quiet outer suburb into a mid-sized city with its own economic and cultural identity. The historic Vieux-Terrebonne along the Riviere des Mille-Iles draws visitors to its heritage buildings, theatres, and restaurants, while newer residential developments in La Plaine and Lachenaie have attracted waves of young families seeking more affordable housing than on the Island of Montreal. The city sits at the junction of autoroutes 19, 25, and 640, making it a transportation crossroads for the north shore.

In 2025, the riding's key federal issues were housing affordability in a market where suburban prices have surged alongside Montreal's, the cost of living for commuter families, and the adequacy of public transit connections to Laval and Montreal. The threat of US tariffs on Quebec manufacturing weighed on local workers employed in the broader metropolitan economy. The extraordinarily close result -- ultimately annulled by the Supreme Court -- made Terrebonne one of the most dramatic electoral stories of the 2025 campaign.