David Gergen: “It's unique as far as I can tell -- no American history.”

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…

I don't think Trump is out of the woods, even though his poll numbers are not only staying up, they have actually been strengthened some.

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.

Sadly, you know, I think for a variety of reasons he should not. I just, I don't think either Trump or Biden should be running.