Alexandre Daneau holds a commanding lead in the Beauharnois riding for the October 5, 2026, Quebec National Assembly election, reflecting the Parti Québécois candidate's strong local profile and the party's projected advantage in recent polling models. A third-generation entrepreneur and actor with deep ties to Salaberry-de-Valleyfield and Beauharnois, Daneau secured the PQ nomination in June with 83 percent support and launched his campaign emphasizing support for small businesses, regional services, and sovereignty. The riding's incumbent, Claude Reid of the Coalition Avenir Québec, faces headwinds from broader provincial trends favoring the PQ, which shows vote intentions in the mid-to-high 30s against the CAQ in the upper 20s to low 30s. Other candidates, including Liberal Charles Royer Tremblay and Conservative Angélika Homère, trail further behind. Late developments such as turnout in advance polls, the September 29 debate, or shifts in voter priorities on cost of living and public services could still narrow the gap before election day.