The Socialist Party of France (Parti socialiste, PS) is holding a primary to select their nominee for the 2027 French presidential elections. The first round is scheduled to be held on October 9-10, 2026, and the second round on October 16-17, 2026. This market will resolve to "Yes" if a candidate wins the French Socialist primary outright in the first round, such that no second round is held. Otherwise, this market will resolve to "No." A candidate wins outright if they receive more than 50% of the votes cast in the first round, or if the organizers of the primary otherwise declare them the winner of the primary without a second round being held. If the primary is cancelled, the first round does not take place, or the results thereof are not known definitively by December 31, 2026, 11:59 PM ET, this market will resolve to "No". The resolution source for this market will be a consensus of official PS sources, including https://parti-socialiste.fr/.