Morena leads polling for the June 2027 Chamber of Deputies election by wide margins, with recent surveys from LaEncuesta.mx, Buendía & Márquez, Enkoll, and Parametría placing it between 33% and 45% support, well ahead of PAN (11-19%), PRI (8-14%), and MC (9-12%). This positioning stems from sustained voter preference since the 2024 general election, the ruling party's control of the executive, and a fragmented opposition that has not formed a unified coalition. Traders price Morena at 84.5% as the legislative winner, reflecting its consistent first-place standing and structural advantages in seat allocation, while smaller shares for PAN, PRI, and others align with their lower individual polling and lack of recent momentum to close the gap before the June vote.