**The Socialist Party of France faces deep internal divisions over its 2027 presidential nominee selection process, keeping implied probabilities tightly clustered among numerous contenders.** Party First Secretary Olivier Faure has pushed for a broad left-wing primary involving Socialists, Greens, and Communists, while figures like Boris Vallaud advocate an independent moderate candidate to broaden appeal beyond the radical left. These tensions led to Vallaud’s resignation from leadership roles and factional walkouts earlier in 2026. Ségolène Royal has formally entered consideration, while Raphaël Glucksmann, François Hollande, Carole Delga, and others remain undecided or exploratory ahead of an internal primary now slated for October 2026. With no dominant frontrunner and the outcome hinging on unresolved procedural votes and alliance negotiations, trader consensus reflects high uncertainty across the field rather than clear momentum for any single name.