WEST DES MOINES, IA - JANUARY 27: Republican presidential candidate Sen. Marco Rubio (R-FL) speaks to guests and supporters during a campaign rally at Wellman's Pub and Rooftop on January 27, 2016 in West Des Moines, Iowa. Politicians are stepping up their campaigning in Iowa ahead of the state's February 1 caucuses. (Photo by Christopher Furlong/Getty Images)
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