Democratic candidate for the U.S. Senate from Virginia, former Gov. Tim Kaine, runs to the stage to speak at a rally where President Obama and former President Bill Clinton appear later, Saturday night, Nov. 3, 2012, in Bristow, Va. (AP Photo/J. Scott Applewhite)

Photo by: J. Scott Applewhite

Democratic candidate for the U.S. Senate from Virginia, former Gov. Tim Kaine, runs to the stage to speak at a rally where President Obama and former President Bill Clinton appear later, Saturday night, Nov. 3, 2012, in Bristow, Va. (AP Photo/J. Scott Applewhite)