**In San Luis Potosí’s state congress race, trader sentiment reflects a tight contest between Morena and PVEM, with other parties trailing.** PVEM benefits from the current governor’s high approval ratings and the party’s established local organization, while Morena runs independently after national leadership ruled out a coalition in this state. Recent gubernatorial polling from Reforma, Emotegia, and Mitofsky shows PVEM leading by double digits, yet legislative results hinge on single-member districts, turnout patterns, and any late alliances or candidate announcements. The fragmented field and absence of a clear frontrunner for plurality keep implied probabilities clustered among leading options, with separation likely to emerge from district-level polling or formal nomination deadlines ahead of the 2027 vote.