1] You sent a tweet suggesting a new party would have to be started if Donald Trump wins the GOP nomination. Were you serious? Would you leave the Republican party if he does win the nomination?
KRISTOL: I was semi-serious. I don't think Trump will be the nominee, so I don't expect it to be an issue. But since I don't think I could support Trump, and I'd like to have someone to vote for, if Trump were to be the nominee, I'd be open to a new party, probably for 2016 only -- but you never know.
2] Would you support Hillary Clinton over Trump if they are the nominees?
3] Ok, lay out for me a scenario in which Donald Trump does not win the nomination. Who overtakes him? And when?
KRISTOL: Trump loses Iowa, the mystique disappears, he's just another candidate -- though perhaps a formidable one -- and he's beaten by either [Marco] Rubio, [Ted] Cruz or [Chris] Christie.
4] Looking at the polls, Trump does not seem to be penalized by his supporters for making controversial comments. What does that tell you?
KRISTOL: For now, they're willing to set a lot aside on behalf of their favorite. I'm not sure that continues forever or even for another month.
5] What do you think is Jeb Bush's calculus at this point? How important is Iowa for his campaign?
KRISTOL: Bush may be a little less dead than everyone thinks. He needs to run ahead of Christie and [John] Kasich in Iowa, and then again in New Hampshire. If he can do this, he stays in as the sober, experienced candidate against Trump, Cruz and Rubio.