Obama needs at least a 5 point lead, and I think he'll get it.
Wow, lowering the bar again.
Yes, I too think Obama will win by more than 5 points, but why does he "need" it? He's going to clinch the pledged delegate majority no matter what and there's barely anything left to vote. The superdelegates aren't going to swarm to Hillary in droves because she managed to hold Obama to a 4 point victory in Oregon.
The super delegates won't move for a bare victory, especially after WV and if there is a blowup in KY.
If it is not a decisive win, the super delegates will not be decisive.
I am, however, happy to note the amount of bar lowering I've done for Obama.