David Gergen: “I think in each case, Nixon and Trump, you find questions about whether the president himself is impeding the…”

The midterms really helped him. They transformed the race, best midterm elections for any president in 20 years.

For Donald Trump to go for a 24-plus hours without a word being said is an outrage in and of itself. This is a man who is seeking the nomination of a major political party, very likely to get it. And now look at the leadership he is…

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