The French Socialist and social-democratic primary features five candidates—Raphaël Glucksmann, Olivier Faure, Ségolène Royal, Jérôme Guedj, and Emmanuel Maurel—for the 2027 presidential nomination, with first-round voting scheduled for 9–10 October. Recent televised debates highlighted interpersonal tensions and divisions over alliances with La France insoumise, without establishing a clear frontrunner. Over 140,000 voters registered by the October 6 deadline, exceeding expectations but reflecting a fragmented electorate split across party lines and sympathizer channels. With no candidate positioned to consolidate an absolute majority in initial polling trends or reporting, traders see a second round on 16–17 October as the probable outcome. The two-round format and dispersed support base reinforce expectations that the contest will advance beyond the opening ballot.