Forget about this 50 State BS!
Concentrate most of the money & resources in VA, PA, NC, CO OH & FL!!!!
And NV, IA, NH, and ME2.
If he keeps Romney’s states, he can tie with FL, OH, NV, IA, and NH (then the Republican House will presumably give it to him) or he could win it out right with the addtion of the extra electoral vote in Maine’s 2nd congressional distict. That way he wouldn’t even need PA, VA, or CO (or MI or WI either). Also if he wins VA or CO but not PA, he will still need one or two of the other small swing states (NV, IA, or NH), so these states are just as critical as the big ones.