If Donald Trump wins, it will be a seismic event.

As one person said to me , Republicans know [Donald] Trump is a stain on their party.

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

Jeb Bush was supposed to be the establishment candidate, but he didn't catch on. And the extraordinary thing about this Republican primary is that the establishment, moderate wing of the party has sidelined itself. They're not coalescing around one candidate as they have in the past.

The Democrats pulled out one of their most powerful surrogates - and no, it wasn't President [Barack] Obama. Beyoncé showed up at a GOTV rally in Cleveland, joining her husband, Jay Z, and Hillary Clinton.

There's a lot of anxiety about terrorism among the country at large. There's also a feeling the country has stagnated.

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.