As those states and others in the South and West become more diverse and educated, they will become harder for the Republican Party - in its current form - to win.

If she Hillary Clinton win just two of the three big battleground states - North Carolina, Florida and Virginia - she will have shut off Trump's path to 270 electoral votes, even if he wins the other toss-up states.

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

[Mike] Bloomberg aides says he's more likely to run if it's [Donald]Trump or [Ted] Cruz versus Sanders, then there would, presumably, be space in the middle for him. But he's less likely to go if Hillary Clinton is the nominee.

Ted Cruz is a small-government conservative.

If Pat Toomey of Pennsylvania wins, for instance, it will tell Republicans that their own brand hasn't been hurt too badly by [Donald] Trump's negatives.

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