Ah, yes, the Democrats playing the race card on conservatives again.
Several reasons:
(1) Rarely does the entire nation swing toward the same party, even if the national swing is huge. (SD in 1972, VT in 1980, TN in 1988, IA in 1992, and MD in 2000) In fact, it hasn't happened since 1976.
(2) Increasing polarization leads to people (on both sides) becoming less and less willing to support the "other" side. It's the same reason why it's almost impossible for a Republican to win Democratic areas.
(3) Arkansas, Tennessee and West Virginia, in particular, were strong Clinton states. While the Clintonite resentment toward Obama was overestimated in 2008, in these states it was indeed the case. (WV is also an example in point 2, as it already swung R heavily in 2004.)
