As one conservative intellectual said to me - he said if the choice is between [Joseph] Stalin and [Adolf] Hitler, I'd pick Stalin, meaning Ted Cruz because he's more predictable. So there's real civil war inside the Republican Party.

What does [Hillary] Clinton do if she loses? Concede? Blame the Russians? Or the FBI?

Obama has built his public image around his ability to bridge divisions - racial, ideological or generational. And that was his reputation, even at Harvard Law School, where he was the first black president of the 'Law Review.

After months and months at the top of the polls, there is a real possibility that Donald Trump could be the nominee.

The winner's margin of victory also matters. If it's a squeaker, that will make the lessons learned for both parties much murkier.

Donald Trump has said he wants to keep Medicare and Social Security the way they are. Congressman Price along with most Republicans are on record supporting voucherizing Medicare. So there are going to be some conflicts to resolve there.

Obama's even keel sometimes comes across as aloof or even cold.