Donald [Trump] has had a long career of using great wealth and power trying to bully others.

What data can tell you is if you have 10 messages, all of which you believe, it can tell you which messages are resonating and which aren't. And if you break it down even further, the truth of the matter is some messages resonate one place and other messages resonate another place.

It's critical to have a sound foundation in free-market economics and the Constitution. A great many Republicans in Washington don't have that foundation.

I'm not going to play pundit on Donald Trump and criticize him. I will say the media's treatment of that illustrates a very, very different - I mean, it dominated the news for a week to 10 days once he was the nominee. In the primary, it didn't get, seemingly, even 30 seconds of news.

There's a real danger when people get distracted by peripheral issues. They get distracted by democracy building. They get distracted about military conflicts. We need to focus on defeating jihadism.

You know what the [Barack] Obama administration keeps getting wrong is whenever anything bad happens they focus on law-abiding citizens instead of focusing on the bad guys.

I think what Republicans want is someone who will stand up and lead, who will take on the great challenges of the day, who will make the case that the path we're on isn't working; that the Obama-economy is a disaster, that Obamacare is a trainwreck, that our constitutional rights are under assault and that we need to restore America's leadership in the world.