My guess is the map with Romney winning the nod but we still get the economic crash. Obama does worse in the west but is able to grab Missouri.
Obama won Nevada by 12 points. He won New Mexico by 15 points. There's no way in hell Romney would have carried those states given that kind of Democratic lean this cycle.
And Romney's opportunistic immigrant-demagoguery would not have improved on McCain's shockingly dismal performance among Hispanics in those states. There aren't enough "energized" Mormons to overcome those kinds of pro-Dem immigrant margins.