Overview
- Barnier sent a letter to Les Républicains members in Paris pledging exclusive commitment to the National Assembly seat and denying any 2026 mayoral ambitions.
- His candidacy follows the Conseil constitutionnel’s July 11 invalidation of Jean Laussucq’s mandate and requires formal ratification by the LR investiture commission on July 28.
- Rachida Dati, Culture Minister and mayor of Paris’s 7th arrondissement, has also declared her intention to run in the legislative by-election.
- The contest has exposed divisions between LR president Bruno Retailleau, who backs Barnier, and Assembly group leader Laurent Wauquiez, allied with Dati’s camp.
- The by-election must be held by mid-October and is viewed as a barometer for centre-right cohesion ahead of Paris’s 2026 municipal and France’s 2027 presidential elections.