Overview

• Barnier defeated Socialist Frédérique Bredin with roughly 62% to 38% in the second round.
• Turnout fell to about 23–24% of registered voters, a level Barnier linked to wider political fatigue as France still lacks a full government under Prime Minister Sébastien Lecornu.
• The victory makes him the sole Les Républicains deputy in Paris and the 50th member of the LR group in the National Assembly.
• The by-election followed the Constitutional Council’s annulment of macronist Jean Laussucq’s 2024 win for campaign-account irregularities, and Renaissance did not field a candidate.
• Barnier signaled plans to revive a security proposal to lengthen detention for foreigners already convicted and judged dangerous.