The open seat in La Prairie, following incumbent Christian Dubé’s decision not to run, has produced a competitive race among Coalition Avenir Québec’s Pierre Guillot-Hurtubise, Parti Québécois’s Frédéric Côté, Quebec Liberal Party’s Sonia Ziadé, and Québec solidaire’s Francine van Winden. The election call on August 27 for the October 5 vote, combined with shifting provincial polling trends under new CAQ leadership and PQ momentum, has kept implied probabilities closely bunched in trader assessments. Limited local differentiation so far, similar nomination timelines, and the absence of decisive early surveys or major endorsements sustain the tight positioning. Further separation could emerge from riding-specific debates, targeted campaign events, or clearer signals on key issues such as housing and economic priorities before nomination deadlines close in mid-September.