It'll be interesting to see how long it takes for WV to become internally GOP like the rural South. Union influence might be the only thing actually stopping it as of now. Anyway, I believe a margin like that. What started to flip WV, I think, was the culture wars stuff in the '90s. From what I know of it in the late '90s, people felt very, very threatened by the kind of social progress that loomed on the horizon. It's also so economically disadvantaged and people are largely so low-information that they are vulnerable to corporate propaganda.
West Virginia, long one of the most reliable D states, really turned on George McGovern in 1972... going R+2 that year. George McGovern was a horrible match for West Virginia -- and Barack Obama is about the same.