The Republican Party, right now, is a conservative populist party.

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.

Republicans like Trent Lott, saying [Donald] Trump would be more flexible [then Ted Cruz].

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.

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

The president is under 50 percent approval ratings in all the battleground states. So, you could say that President Obama is defying gravity by still being in a dead heat with Mitt Romney. And one of the reasons that he is, is because the changing face of the electorate are giving him a small boost.

For Democrats, anything less than 15 net pickups will be a disappointing outcome [in presidency race].