Republicans think that [Ted] Cruz would be like Barry Goldwater. He'd lose in a landslide and pull the party down with him. They'd lose Senate and House seats.

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

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

In 2012, Hispanics were 10 percent of the electorate, underperforming their share of the voting-age population. Mitt Romney got 21 percent of their vote, and [Donald] Trump has been polling much lower than that.

What if he says [Donald Trump] plans to run again in 2020?

For a long time, many Republicans thought if they just took two aspirin and laid down, [Donald] Trump would go away.

If [Hillary] Clinton wins, history will also be made: She would be the first female U.S. president, of course, but also the only candidate in the modern era, other than George H.W. Bush, who managed to follow a two-term president of her own party.