Sen. Enrique Inzunza left the Morena party and declared himself an independent during a Senate plenary session this Sunday [2].

This departure reduces the qualified majority held by the Morena bloc in the Senate of the Republic. The loss of a vote complicates the party's ability to pass critical constitutional reforms that require a high threshold of legislative support [2].

Inzunza's exit follows allegations from the U.S. regarding suspected links to organized crime [1, 2]. These accusations created internal divisions among legislators concerning whether Inzunza should remain part of the parliamentary bloc [1, 2].

The tension within the party escalated as members debated the political cost of maintaining a member flagged by U.S. authorities. While Morena maintains a significant presence in the chamber, the shift to independent status by Inzunza creates a gap in the specific numbers needed for constitutional changes [2].

The Mexican Senate is now navigating a shifted landscape where the ruling party must secure more external agreements to achieve its legislative goals. The move by Inzunza marks a visible fracture in the party's unity during a period of high-stakes governance [2].

Enrique Inzunza left the Morena party and declared himself an independent

The loss of a single seat can be mathematically significant in the Mexican Senate when pursuing constitutional amendments, which require a two-thirds majority. By moving to independent status, Inzunza transforms from a guaranteed party vote into a swing vote, forcing Morena to negotiate with other factions or independents to reach the required threshold for structural legal changes.