David Gergen: “But to make it a centerpiece of his campaign is a big surprise.”

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

I think it's going to take something usually unexpected or a dramatic change in his health or a prison sentence to stop him.

No, their problem is Anderson, he's got more support back in their districts in their states than they do and that gives him enormous -- it gives him enormous leverage against them.

I think Chuck Schumer will have to pay more attention.