Sanders was pretty poised to win the state. The West Virginia electorate is more than 93 percent white, which has been one of Sanders' favored demographics so far. And exit polls show the majority of voters want the next president to be more liberal than President Obama.
The win could provide a momentum bump for the Vermont senator, but it's not going to do much for Sanders' delegate deficit behind front-runner Hillary Clinton. West Virginia only had 29 delegates up for grabs Tuesday.