Major left-wing parties including the Socialist Party, La France Insoumise, and Place Publique have declined to participate in the proposed October 2026 United Left primary, leaving only smaller groups such as Les Écologistes, L’Après, and Debout! committed. March 2026 municipal election results highlighted persistent divisions, with parties prioritizing independent positioning ahead of the 2027 presidential contest rather than coalition-building through a joint primary process. This limited field and absence of broader endorsement have driven trader consensus toward cancellation at 92.2%, reflecting procedural thresholds where non-participation by key organizers would halt the vote. Late reversals by major parties or official confirmation of a scaled-back event remain the primary variables that could shift the outcome before the scheduled date.