Democratic National Convention 2012

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  Former Florida Republican Gov. Charlie Crist addresses the Democratic National Convention in Charlotte, N.C., on Thursday, Sept. 6, 2012. (AP Photo/J. Scott Applewhite) J. Scott Applewhite / AP

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  Journalist and talk show host Cristina Saralegui addresses the Democratic National Convention in Charlotte, N.C., on Wednesday, Sept. 5, 2012. J. Scott Applewhite / AP

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  A boy wears an Obama yamaka during day two of the Democratic National Convention (DNC) in Charlotte, North Carolina, U.S., on Wednesday, Sept. 5, 2012. Democratic officials have moved President Barack Obama's nomination acceptance speech tomorrow night to the Time Warner Cable Arena from the larger, outdoor Bank of America Stadium because of the possibility of severe weather. Photographer: Scott Eells/Bloomberg SCOTT EELLS / Bloomberg

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  CHARLOTTE, NC - SEPTEMBER 05: A woman holds a sign that reads "Arab American Democrat" during day two of the Democratic National Convention at Time Warner Cable Arena on September 5, 2012 in Charlotte, North Carolina. The DNC that will run through September 7, will nominate U.S. President Barack Obama as the Democratic presidential candidate. (Photo by Chip Somodevilla/Getty Images) CHIP SOMODEVILLA / STAFF