Obama speaks to supporters in Virginia

Democratic presidential candidate Sen. Barack Obama, D-IL, (center) stands with Virginia Governor Tim Kaine (left) and Sen. Jim Webb, D-VA, before addressing a crowd of thousands at Nissan Pavilion in Bristow, Virginia, on June 5, 2008. Obama claimed the party's nomination after he edged out Sen. Hillary Rodham Clinton, D-NY. Clinton is expected to concede the race on June 7. (UPI Photo/Roger L. Wollenberg)