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Vice President Joe Biden gestures during a rally at the Chesterfield County Fairgrounds exhibition hall in Chesterfield, Va., Tuesday, Sept. 25, 2012. (AP Photo/Steve Helber)

Vice President Joe Biden gestures during a rally at the Chesterfield County Fairgrounds exhibition hall in Chesterfield, Va., Tuesday, Sept. 25, 2012. (AP Photo/Steve Helber)

Vice President Joe Biden

Vice President Joe Biden on the 2012 campaign trail.