In Virginia’s Democratic primary, Barack Obama defeated Hillary Clinton by nearly a 2 to 1 margin as part of a sweep of the Potomac Primaries held on February 12th in Virginia, Maryland, and Washington DC.
Both McCain and Obama found their support strongest in the East, while Huckabee and Clinton performed best in the West.
Virginia Primary Maps from the New York Times
Virginia Primary Maps
Virginia Primary Margin of Victory Maps
Political Geography of the Virginia Primary from the Washington Post
Political Geography of the Virginia Primary from the Washington Post