Vice President Joe Biden and his wife Jill wave to delegates after 

Vice President Joe Biden and his wife Jill wave to delegates after his speech at the Democratic National Convention in Charlotte, N.C., on Thursday, Sept. 6, 2012. (AP Photo/Lynne Sladky)
Associated Press
Vice President Joe Biden and his wife Jill wave to delegates after his speech at the Democratic National Convention in Charlotte, N.C., on Thursday, Sept. 6, 2012. (AP Photo/Lynne Sladky)
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