Morena holds a commanding lead in trader pricing for the Mexico City Congress election on June 6, 2027, driven by consistent national polling advantages of 43-46 percent for the party and its coalition allies ahead of the concurrent federal midterms. The governing bloc benefits from structural advantages including control of the federal executive under President Claudia Sheinbaum, established local organizational strength in the capital, and ongoing legislative momentum on issues such as rent regulation and metropolitan planning. Fragmented opposition parties including PAN, PRI, and Movimiento Ciudadano trail significantly in surveys, limiting their path to a plurality of seats in the 66-member body. Recent initiation of the electoral process by the IECM and absence of major shifts in voter preferences have reinforced this positioning, with traders viewing Morena as the consensus favorite while assigning lower implied probabilities to challengers.