David Gergen: “The dynamics of this campaign, as we talked about last night, are definitely changing.”

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

It's increasingly hard to govern.

I think, basically, this is about power. I think he wants to cripple Joe Biden before he ever gets started.

I think the evidence is still coming in that this country is deeply divided.