My bet is on Warner. I don’t think Hillary will run—she will run out of gas quick once the Bengazi thing gets out—Too much bagage. Obama might well be forced out of office, like Nixon was—if more scandals crop up—and Biden will be President. He will select Hillary as his VP to fill out the term. My eye is on Rand Paul, he has his fathers base and a good firm tea party backing, if he should pick Lee or Cruz as his VP it will be a hard ticket to beat—especially if the Democrats are tarnished by more scandal and lose the MSM.
It wasn't the scandals that forced Nixon from office (which by Clinton and Obama scandal standards weren't even all that bad), it was that there votes were there for impeachment. They aren't there now. Sorry, but I'm afraid that the only way Obama is leaving before January 2017 is an Act of God.