This is mostly accurate. It's the 21% of Democratic voters who say they won't vote for Obama, and the 9% of voters who say they are not comfortable voting for a black man that is keeping McCain afloat.
Whether this will transfer to the voting booth is anyone's guess.
I've thought of that, but my concern is that by picking a candidate with a "strong military" background, Obama would be suggesting that he's not comfortable with his own background. And that would not be good. Especially given the shift Obama seems to want to take in American foreign policy.
It's better for him to appear confident in this area, in which case, he shouldn't pick a candidate that looks like he's trying to compensate for his own shortcomings.
I'm aware. But most often, everyone says they're not interested. I've read quite a number of rumors that Edwards would prefer to be the Attorney General, but that he'd consider going once more as a VP.
Moreover, if Obama offered to let Edwards spearhead a poverty initiative, or health care reform, I'd imagine Edwards might change his mind.