Trois-Rivières

Situated midway between Montreal and Quebec City on the north shore of the St. Lawrence, Trois-Rivières takes its name from the three-armed delta of the Saint-Maurice River at its confluence with the St. Lawrence. The city serves as the regional capital of the Mauricie and has undergone a significant economic transformation from its historic base in the pulp and paper industry.

Candidates

Robert Aubin (NDP) — A longtime teacher at the Séminaire Saint-Joseph de Trois-Rivières with nearly 25 years of classroom experience, Aubin held a diploma in geography from Université Laval and a degree in music and education from the Université du Québec à Trois-Rivières. First elected in the 2011 NDP surge with over fifty percent of the vote, he had established a strong local profile during his first term.

Yvon Boivin (Liberal) — A manager at Revenu Québec, Boivin was also co-founder of the Coalition d'aide aux victimes de la pyrrhotite, an organization supporting homeowners whose foundations had been damaged by pyrrhotite-contaminated concrete. The pyrrhotite crisis had affected thousands of homes across the Mauricie region, giving Boivin a personal connection to one of the area's most pressing local concerns.

Dominic Therrien (Conservative) — Originally from Trois-Rivières, Therrien was a lawyer at the Miller Thomson firm in British Columbia who held a master's degree in international relations from the Sorbonne. A former minor-league baseball player who had signed with the Atlanta Braves organization, he returned to run in his hometown.

André Valois (Bloc Québécois) — Valois represented the Bloc in a riding that had been a Bloc stronghold before the 2011 NDP wave swept Quebec.

Éric Trottier (Green Party) — Trottier ran for the Green Party in the Mauricie region.

About the Riding

Once synonymous with the pulp and paper mills that lined the Saint-Maurice, Trois-Rivières had spent years diversifying its economy. The Université du Québec à Trois-Rivières, known for its chiropractic and education programs, anchored the tertiary sector, while manufacturers like Marmen Inc. had pivoted toward wind turbine tower production. The pyrrhotite crisis — caused by a mineral in locally sourced concrete aggregate that expanded and cracked foundations — had devastated thousands of homeowners in the region since the mid-2000s, with repair costs exceeding $200,000 per home. Federal and provincial assistance programs remained a major local issue. The city's port and its position along the Highway 40 corridor between Quebec's two largest cities continued to drive its logistics and distribution sector.