That map of the white vote in North Carolina is very interesting. I'm somewhat surprised by how relatively well Obama did among whites in the rural mountain counties.
White voting in Buncombe, Watauga, and Jackson counties (and too a lesser extent Polk and Transylvania) is a bit like Oregon- lots of White lefties and Conservatives, but very few minorities, except on the Cherokee reservation in Jackson County.
The other close areas around Asheville are largely tied to local Blue Dog traditions.
An interesting question: Did Obama win the white vote in Jackson County? I remember reading somewhere that he did, but I doubt it, considering the high Cherokee population. Of course, turnout might be crap...paging Lewis Trondheim?