We're seeing is young people who are optimistic, who want a future, want our constitutional rights, are coming to our campaign.

I think data is incredibly powerful for understanding what people are thinking and for allocating resources.

I like Donald Trump. I appreciate that he's focusing on illegal immigration. It's an issue I've been fighting a long, long time. I think people are very concerned, for example, about the problems of sanctuary cities and - and that is something that's a - that people are finally turning their attention to.

Whatever the history of U.S. intervention in Iraq, our priorities now should be to protect our people and defend our national security interests, not to try to resolve an intractable religious divide some 1,500 years in the making.

I feel quite confident there will never be a plane on the face of the Earth with my name on it.

Lets us all have an open conversation about what this might mean if [Donald] Trump gets his way or how we might be able to adjust that and make American people safer.

I think if you're at home and you don't want Donald Trump to be the Republican nominee, then the only candidate who can beat Donald is our campaign. And so I would encourage, even if you like another candidate, stand with us if you don't want Donald to be the nominee.