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

Republican candidates have won whites with college degrees in every presidential election since polling began.

Senate races have tightened along with the presidential race. Watch to see how many Republican Senate candidates outperform Donald Trump - and how many hang on to their seats in states that he loses.

The country wants the president and the Congress focused on jobs and the economy. Any regulation that the president promulgates that isn't focused on, I think, is a risk for him, and the same is true for Congress.

A big win for [Hillary] Clinton would allow her to claim that the country rejected Trumpism, while a narrow win leaves her limping into office with the highest unfavorable ratings for any new president.

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

Even if [Donald] Trump concedes, some of his supporters have promised to take up arms against [Hillary] Clinton.