Pssst, your ignorance is showing.

The civilians won’t pick the candidates, the state will (different parts of it, but all of them under the control of Morena) and then they’ll use the civilians to vote for them and then frame it as if it was the will of the people. You know, populism.

Also the narcos are REALLY happy about this change, because the candidates are going to need money to campaign and they could always use a hand in higher places (even if the president protects the narcos already).

It doesn’t touch the police problem at all or the security problem, but it allows Morena to fill the magistrate with their people regardless of their studies, they can even put criminals in there (search for the history of any Morena member, they have murderers, thiefs, pedos and rapists).
Now tell me… What does this change fix? Besides “now people can vote for Morenas picks!”.