David Gergen: “Gavin Newsom is not going to allow Washington D.C. to tell him what - how his citizens should live, and how they should…”

I think a lot of Americans do see it as disqualifying. And they're worried about it.

If he comes out and throws cold water on this, then I don't think it goes anywhere.

You can't out-Nixon Nixon very easily, but Donald Trump has.

I think the turning point that came were the midterm elections. The fever broke with those midterm elections. And what we've seen since then is a steady decline in Trump's credibility and in his position with the American people, and a…