Presidential Candidates Speak At Iowa State Fair Soapbox [Getty Images]

Senator Bernie Sanders, an independent from Vermont and 2016 Democratic presidential candidate, sits during a Bloomberg Television interview at the Iowa State Fair in Des Moines, Iowa, U.S., on Saturday, Aug. 15, 2015. The Iowa State Fair is expected to host 18 presidential candidates and runs until Aug. 23. Photographer: Daniel Acker/Bloomberg via Getty Images

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