FILE - In this Sept. 5, 2012 file photo, President Barack Obama waves after Former President Bill Clinton spoke at the Democratic National Convention in Charlotte, N.C. Barack Obama cou

 

              FILE - In this Sept. 5, 2012 file photo, President Barack Obama waves after Former President Bill Clinton spoke at the Democratic National Convention in Charlotte, N.C. Barack Obama cou
FILE - In this Sept. 5, 2012 file photo, President Barack Obama waves after Former President Bill Clinton spoke at the Democratic National Convention in Charlotte, N.C. Barack Obama could not have asked for a more potent testimonial than Bill Clinton’s point-by-point defense of his policies -- destined to play out in campaign ad snippets from now until Election Day. Yet in the end, people vote for candidates, not their surrogates. (AP Photo/David Goldman, File)