Morena maintains its leading position in the 2027 Mexican legislative election market due to a reaffirmed alliance with PVEM and PT announced in mid-May, alongside polling averages that place the party well ahead of the opposition. The coalition's continuity supports expectations of coordinated candidate strategies for the June 6 vote across the Chamber of Deputies and 17 governorships, despite earlier fractures over an electoral reform proposal that failed in March. Fragmented opposition parties including PAN, PRI, and MC trail in surveys and lack unified alliances, limiting their path to a plurality. Traders reflect this dynamic in current pricing, with Morena favored to win the most seats while smaller parties retain modest probabilities tied to potential coalition shifts or regional gains.