The Nepo Trap That Could Break Mexico’s Ruling Party

The weakness that helped Morena defeat its rivals is now spreading inside the party itself

In 2025, Mexico’s ruling party, Morena, passed a reform to ban nepotism in politics. The law prohibits politicians from nominating relatives up to the fourth degree as their successors.

This is an excellent measure for reducing corruption, but many analysts agree that it puts Morena at a disadvantage. Unlike other parties, which agreed on applying the anti-nepotism law in 2030, Morena unilaterally decided to enforce it immediately. This means that, in the 2027 election, opposition parties will be the only ones with the advantage of nominating political bosses and members of clans that control a significant number of votes in certain territories.

The question is why Morena is in a rush to eliminate nepotism within its ranks. The answer reveals more about how politics work in Mexico than the electoral results themselves.

That is why, today, we dedicate the Mexico Decoded essay to explaining the reasons why Morena’s leadership rightly believes that implementing this reform is not a disadvantage, but a critical step if the party is to remain in power.