Marine Le Pen holds an 81.5% implied probability as first-round winner due to consistent polling leads of 35-37% in October 2026 surveys, well ahead of Jean-Luc Mélenchon at 18-19% and Édouard Philippe at 13-17%. Recent Harris Interactive and Ifop data show her maintaining this edge across multiple candidate lineups ahead of the April 2027 vote, supported by National Rally positioning and voter assessments of competence. On the left, Raphaël Glucksmann’s first-round victory in the center-left primary has clarified one potential qualifier, while center-right figures like Philippe and Gabriel Attal continue unity talks without narrowing Le Pen’s margin. These dynamics, including stable runoff projections favoring her, underpin trader consensus on her first-round frontrunner status.