Mexico Senate: Morena bloc holds 86 seats, two-thirds threshold for constitutional reform

In Mexico's Senate, the ruling coalition (Morena, PT, Verde) holds exactly 86 seats, the precise number needed for a two-thirds majority in a full house to pass constitutional reforms. This numerical balance makes the outcome of any reform vote contingent on full attendance and party discipline. The development is significant because it determines the legislative feasibility of major constitutional changes, though the specific reform in question is not detailed.