Sometimes in very conservative areas, and I'm not saying this happened in this case, the very few people who turn out for primaries are very liberal. Like, Obama did extremely well in Utah, Wyoming, Alaska, etc.'s primaries.
Maybe in Utah, but North Carolina is pretty damn different...unless there are a lot of mountain getaway-type homes there, or something.
A lot of Obama's Utah win related to kick-ass performance in tourist areas. Although you may be onto something -- Obama totally ruined Clinton in Provo. But in a rural, downscale county like that? Doesn't seem like an area that would be flooded with culturally liberal Dems. Just intuition.
That's not the Asheville area anyway, Asheville is in the northeast corner. The counties he won are Yancey, which is standard-issue Appalachia (with plenty of Democrats) and McDowell -- which is a Blue Mountains county to its heart, but doesn't especially vote like one. Odd