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Olivier Faure Poised for Re-election as Socialist Party Chief as Party Faces Membership Crisis

Backed by Boris Vallaud, Faure must steer a party of just 40,000 members toward forging a unified non-Mélenchon left for the 2027 election.

Overview

  • Olivier Faure leads Nicolas Mayer-Rossignol into Thursday’s final vote after securing 42.2% in the first round and winning Boris Vallaud’s personal endorsement.
  • Socialist Party membership has collapsed to about 40,000 adherents, exposing deep strategic and ideological fractures ahead of the Nancy congress.
  • Faure is advocating a broad alliance of non-Mélenchon left figures, naming Raphaël Glucksmann and François Ruffin as potential partners for a joint 2027 presidential bid.
  • Mayer-Rossignol and his coalition of anti-Faure figures accuse the incumbent of ‘clannish’ governance and of maintaining ambiguous ties with Jean-Luc Mélenchon’s camp.
  • In parallel, former deputy Pierre-Yves Bournazel formally launched his 2026 Paris mayoral campaign with Édouard Philippe’s backing, positioning himself against Rachida Dati.