David Gergen: “It's all about votes, not a marriage.”

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

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

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…

If he had a receptive audience, and I will tell you, when everything -- when all the facts were to come out, it would be like Nixon and the tapes.