Joe Kennedy III, candidate for the House of Representatives from Massachusetts, addresses the Democratic National Convention in Charlotte, N.C., on Tuesday, Sept. 4, 2012. (AP Photo/J. Scott Applewhite)

Photo by: J. Scott Applewhite

Joe Kennedy III, candidate for the House of Representatives from Massachusetts, addresses the Democratic National Convention in Charlotte, N.C., on Tuesday, Sept. 4, 2012. (AP Photo/J. Scott Applewhite)