Delegates wave the signs during the Democratic National Convention in Charlotte, N.C., on Tuesday, Sept. 4, 2012. (AP Photo/Jae C. Hong) First Lady Michelle Obama hugs Elaine Brye before speaking at the Democratic National Convention in Charlotte, N.C., on Tuesday, Sept. 4, 2012. (AP Photo/Lynne Sladky) First Lady Michelle Obama addresses the Democratic National Convention in Charlotte, N.C., on Tuesday, Sept. 4, 2012. (AP Photo/J. Scott Applewhite) First Lady Michelle Obama speaks to delegates at the Democratic National Convention in Charlotte, N.C., on Tuesday, Sept. 4, 2012. (AP Photo/Charlie Neibergall) First Lady Michelle Obama, right, is greeted by Elaine Brye at the Democratic National Convention in Charlotte, N.C., on Tuesday, Sept. 4, 2012. (AP Photo/Charlie Neibergall) First Lady Michelle Obama addresses the Democratic National Convention in Charlotte, N.C., on Tuesday, Sept. 4, 2012. (AP Photo/J. Scott Applewhite)