Everybody can vote, except people named Fran.

Why The Crazy Caucus and Primary Rules Are Legal.

I've been wondering about that very question; nice of Richard L. Hasen on Slate to address it directly. It seems to basically boils down to this: The Democratic and Republican Parties are private organizations, so they can run elections (funded by taxpayers' money) according to whatever rules they want, no matter how many voters get shut out, and the courts won't do a thing about it. Unless somebody tries to discriminate against black voters, which the legal system will step in to stop, because everybody agrees: THAT kind of discrimination is bad. But any other kind? Just more good clean political fun.