Left's performance in major cities raises questions about future viability.
Geography and fragmentation play crucial roles in current politics.
Expert analysis from Renaud Foucart sheds light on emerging trends.
Briefing: After strong showing in France's major cities, will left even qualify for 2027 presidential runoff?
Strategic angle: Carys Garland discusses insights from Renaud Foucart on the evolving political landscape in France post-municipal elections.