Exit polls suggest that if Clinton is the nominee, 19% of her vote will vote for McCain; while if Obama is the nominee, 13% of his vote will vote for McCain
Remember WV is not so much home to the 'Reagan Democrat', it is home to the 'Bush Democrat'
Carter won the state in 1980.
Obama needs to get any closeted super delegates out soon.
Considering that in the last week alone he got 27 of them (overall, the week was +27 Obama, net +1 Clinton), he shouldn't have much difficulty.
