Guillaume Rousseau holds the strongest market position at 64.5% among candidates for the Richmond riding in Quebec’s October 5, 2026, National Assembly election, ahead of Bernard Sévigny at 20.5% and Hugo Fontaine at 9.8%. Rousseau’s selection as the Coalition avenir Québec nominee in June, leveraging his profile as a law professor who defended Bill 21 on state secularism through the courts, aligns with the party’s established base in the riding despite the incumbent’s retirement. Sévigny, the Parti québécois candidate and former Sherbrooke mayor, brings municipal name recognition and sovereignty focus that appeals to a portion of voters, while Fontaine’s Liberal candidacy emphasizes regional economic and community issues. Aggregators describe the contest as a multi-party toss-up with shifting vote shares among CAQ, PQ, and PLQ, yet trader pricing reflects Rousseau’s perceived organizational and profile advantages in the final weeks.