Weekly Report - 05 March 2026 (WR-26-09)

Mexico’s President Claudia Sheinbaum is moving on her planned electoral reform. The constitutional reform looks to overhaul the electoral system by eliminating so-called ‘plurinominal’ seats, reducing the size of the senate, axing financing for political parties, banning consecutive re-election, and introducing greater oversight of campaign spending, among other measures. The political opposition has accused the government of seeking to consolidate the power of the ruling left-wing Movimiento Regeneración Nacional (Morena). While this criticism is nothing new, the reform is notable in having exposed differences between Morena and its allies, the Partido del Trabajo (PT) and Partido Verde Ecologista de México (PVEM), whose votes are needed to pass the reform. In this way, the initiative could serve as the first proper test of the relationship between Morena and these typically agreeable allies ahead of the key 2027 mid-terms.