Chris Christie: “I think people would give any leader in that circumstance a lot of credit for just, you know, owning up to it.”

The selection of Senator J.D. Vance of Ohio as Mr. Trump's running mate doubles down on the portion of the party already completely devoted to him rather than reaches out to the broader party and beyond.

This is against type for him. I'm sure it was a difficult decision. I think his analysis was, he cannot live with a nuclear weapon in Iran, and Israel did all of the heavy lifting.

He said it publicly. So I know I have no doubt about that at all.

In my lifetime I've never seen a situation more asking for a viable third-party candidate.