[itsahoot]

The Constitution doesn’t tell us how to select our Presidential candidates, therefore, we are free to choose any method we like.

Actually it does and that does not include citizen voters, but state legislatures who may or may not allow citizens to have any say.

[Boogieman]

“Actually it does and that does not include citizen voters, but state legislatures who may or may not allow citizens to have any say.”

Nope, the Constitution says the State legislatures get to decide how the electors are chosen, but it is absolutely silent on the matter of how Presidential candidates are selected. The party could decide to have a drinking contest to pick their candidate and it would be just as constitutionally valid as any other method.