Morena holds a commanding position in national polling for the June 2027 Chamber of Deputies election, with recent surveys from late September showing the party at 35–41% voter preference compared to 11–18% for PAN, 8–14% for PRI, and 9–12% for MC. This sustained lead, consistent since the 2024 general election, stems from Morena’s strong territorial base and the continued popularity of the ruling coalition under President Sheinbaum. The opposition remains fragmented, with PAN, PRI, and MC exploring limited state-level alliances but lacking a unified national front. The electoral process formally opened in September 2026, with candidate registrations underway and 17 governorships also at stake, reinforcing trader expectations that Morena will secure the largest share of seats.