CLEAR LAKE, IA - AUGUST 14: Democratic presidential candidate Hillary Clinton speaks at the Iowa Democratic Wing Ding August 14, 2015 in Clear Lake, Iowa. The Wing Ding is held at the historic Surf Ballroom, where Buddy Holly and Ritchie Valens played their final concert, and featured Democratic presidential candidates Hillary Clinton, Sen. Bernie Sanders (I-VT), Martin OÕMalley and Lincoln Chaffee. (Photo by Win McNamee/Getty Images)
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