The Senate is the big prize. Until recently, Democrats felt confident they could get the four seats they needed to take back control if [Hillary] Clinton is in the White House and Vice President Tim Kaine held the tie-breaking vote.

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

The [Hillary] Clinton campaign's recent travel schedule shows how seriously it takes this problem. She and her surrogates have held rallies in cities like Philadelphia, Detroit and Cleveland, trying to boost turnout among African-Americans.

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

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.

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