MITCHELL: Well, the — the dispute over superdelegates, I mean the Sanders campaign, Bernie Sanders and you have been arguing that superdelegates should vote the way the states go. You've won 20 states. You hope to win California.

So you're basic argument is that as California goes, so should go the superdelegates from that state?

SANDERS: Well, I think our — our basic argument is really just a fact, that the way to win the Democratic nomination during the primary season is to 2,026 pledged delegates. And in — Bernie is right, it doesn't look like either one of them will be able to reach that threshold by all — after all the primaries are taken.

Then it goes to the convention and then, at the convention, the superdelegates weigh in.