On December 6, 2022, the Chamber of Deputies rejected President López Obrador’s constitutional reform of the electoral system. It received 269 votes in favor and 225 against, short of the two-thirds majority it needed. The government had announced a day earlier that it would send a “Plan B,” changes to several secondary laws of the electoral system, and it reached the Chamber that same day. (Video in Spanish.)
In May 2023, the Supreme Court invalidated the first part of Plan B. López Obrador then announced a “Plan C.” According to Expansión, it consisted of asking voters to vote for the next president and for a qualified majority in Congress.
On March 11, 2026, the Chamber of Deputies rejected President Claudia Sheinbaum’s constitutional electoral reform. Before the vote, Ricardo Monreal, the leader of Morena’s deputies, announced: “comenzaremos a construir el plan B de la reforma electoral” (we will begin to build Plan B of the electoral reform).