Usually, you do a shakeup because you know that you have a problem or you gaps and you're going to fill those gaps.

The people that Donald Trump is putting around him on the Cabinet suggest that he's putting together a very conservative, almost traditionally conservative Republican group around him.

It was very clear, even from long before Donald Trump got in this race, when he would talk to Republicans, the number-one concern they had about Jeb Bush was whether he was too rusty for this, and whether he was going to be strong enough to stand up to Hillary Clinton.

Even on Ben Carson, he's not exactly steeped in housing policy, but his statements on the issue have also been very conservative.

The real problem with Donald Trump is, if you engage him, it will only make things worse. It's like - it's a little bit what you were taught as a kid to not engage the bully, because they will continue to pick on you.

When you look at the people that Donald Trump is actually put around him on his Cabinet, this is a pretty - I would argue a very conservative Cabinet. And whether it's on issues of immigration, his pick for the attorney general, very conservative on that issue.

The difference there is that the [Donald] Trump number on change is so much larger than the lead that the other two have in their lanes. And that's going to be the challenge for those other two going forward. The other challenge for Marco Rubio, and this assumption that you're just going to get all those Bush and Kasich voters.