It’s implicit since there’s no mechanism for the citizens to choose the candidates or to propose themselves; the state (generally speaking) will pick the candidates and since they did what the Republicans did in some parts of the USA, they have a majority and control of everything hence why they will be aligned with the kks, we’ll be used to only vote who of their picks we want so they can say «see? the people picked them so this is democratic and totally legitimate».
We have no say in this or a way to say «fuck these picks, we want someone actually capable and better», people are making protests as we speak but the president only has to say they are neoliberals, the right, conservatives and insult them like he has done every single day and tell his cult to just approve it (they control the congress and the senate) and they will.
Edit: memory fails me, but I think it was written in the document which organisms were going to pick the candidates, non of them were civil organizations or independent, you’d have to look for it because the goverment keeps piling up problems here and there’s just too much to keep up.