Overview
- The congresses of Mexico City, Estado de México, Campeche, Nayarit, Sinaloa and Tamaulipas approved Senate-sent minutas on May 29–30, 2026 that add an inciso to Base VI of Article 41 to allow annulment of elections when foreign intervention is proven.
- Mexico City's legislature passed the minute 43–17, and other approvals were narrow or contested in special sessions in the five states reported by La Jornada and El Heraldo de México.
- The package is broader than the nullity clause: it also delays the selection of judges until 2028 as part of the judicial reform measures approved by the same state congresses.
- Morena and allied parties say the change defends national sovereignty and shields ballots from disinformation or illicit foreign financing, while PAN, PRI and Movimiento Ciudadano lawmakers say the term 'intervención extranjera' is vague and could permit discretionary or politicized enforcement.
- The measures still need approval by a majority of state congresses to become a constitutional reform and a secondary law must be drafted before the rule can be applied, a step lawmakers said could take place in coming months but would not affect 2027 elections without that regulation.