JCL is right. West Virginia may be Democratic on the state level, but when it comes to Presidential elections, they elect Republicans. West Virginia will be one of the last states to vote for Obama regardless of who the GOP nominee is.
Another thing is that Obama is precisely the wrong type of Democrat to win West Virginia; a northern, intellectual Harvard graduate with a foreign-sounding name. Hillary would have won WV easily, as would any Democrat with appeal among white blue-collar voters.
If a Democrat is going to win WV, its gonna be a Clinton-Manchin-Bayh type. People like John Kerry, Howard Dean, and Bill Richardson would never win.