David Gergen: “I think he shoot both of this debates -- I think he's been far better in both of this debates than he was with Hillary.”

It's very, very big. Not legally, but politically, it's a very, very big deal.

We're entering some kind of the most dangerous days of Donald Trump's presidency. He is erratic.

It is time keep an eye on the Republicans in the Senate.

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…