The tight trader consensus around 44-50% for leading candidates in the Montarville Quebec National Assembly riding reflects the closely contested nature of the October 5, 2026, general election, where provincial polling trends show the Parti Québécois competitive with the Coalition Avenir Québec in many South Shore districts. Incumbent CAQ MNA and National Assembly president Nathalie Roy faces PQ challenger Jean-François Cloutier, a former investigative journalist who announced his candidacy in early August, alongside Liberal Mathieu Lavoie and Québec solidaire's Ginette Langlois. The riding's 2022 CAQ result has been transposed onto the new electoral map, producing projections of a toss-up or narrow PQ/CAQ margin as of late August, with nomination deadlines approaching on September 17. Recent campaign launches and leader visits in the region have not yet produced clear separation, leaving room for shifts from riding-specific polling, turnout patterns, or late developments in the final weeks.