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Associated Press
FILE - In this Jan. 3, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney speaks in Des Moines, Iowa. The Iowa magic that launched Barack Obama to the presidency four years ago has all but faded. Today, the Democrat who emerged Cinderella-like in Iowa in 2008 is sharply attacking Republican challenger Mitt Romney’s economic credentials and his ability to grasp voters’ everyday concerns.  (AP Photo/Charles Dharapak, File)

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