France’s Left is focusing on ecological issues as they approach the 2027 presidential election, following a summer marked by climate-related crises. Both La France Insoumise (LFI) and the Ecologists prioritized environmental concerns during their recent political gatherings. This shared emphasis on ecology presents both an opportunity for convergence and a potential source of rivalry between the two parties. LFI is actively seeking the support of the Ecologists for a potential presidential run by Jean-Luc Mélenchon. The discussions center on how to best address the climate emergency and incorporate ecological principles into a broader political platform. This alignment could prove critical for a strong left-wing challenge in 2027, but differing approaches remain. The issue of the ecological transition is therefore central to any potential coalition-building efforts.