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DES MOINES, IA - APRIL 15: Democratic presidential hopeful and former Secretary of State Hillary Clinton (R) stops to take a selfie after meeting with members of the Iowa State legislature at the Iowa State Capital on April 15, 2015 in Des Moines, Iowa. Hillary Clinton continues to campaign throughout Iowa as she makes her second bid for President of the United States. (Photo by Justin Sullivan/Getty Images)

DES MOINES, IA - APRIL 15:  Democratic presidential hopeful and former Secretary of State Hillary Clinton (R) stops to take a selfie after meeting with members of the Iowa State legislature at the Iowa State Capital on April 15, 2015 in Des Moines, Iowa. Hillary Clinton continues to campaign throughout Iowa as she makes her second bid for President of the United States.  (Photo by Justin Sullivan/Getty Images)