U.S. Democratic presidential nominee Obama is pictured backstage before campaign rally in Pennsylvania

 
U.S. Democratic presidential nominee Obama is pictured backstage before campaign rally in Pennsylvania
U.S. Democratic presidential nominee Barack Obama is pictured backstage before a campaign rally in Pittsburgh, Pennsylvania, October 27, 2008. Obama is campaigning in Ohio and Pennsylvania on Monday before the November 4 election. REUTERS/Jason Reed (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA)