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NEW YORK, NEW YORK - APRIL 07: Democratic presidential candidate Hillary Clinton points to her stop after riding the No. 4 train with borough President Ruben Diaz Jr. as she campaigns on April 7, 2016 in the Bronx borough of New York City. The former U.S. secretary of state first spoke outside of Yankee Stadium before riding the subway from the 161st Street station to the 170th Street station. (Photo by Andrew Renneisen/Getty Images)

NEW YORK, NEW YORK - APRIL 07:  Democratic presidential candidate Hillary Clinton points to her stop after riding the No. 4 train with borough President Ruben Diaz Jr. as she campaigns on April 7, 2016 in the Bronx borough of New York City. The former U.S. secretary of state first spoke outside of Yankee Stadium before riding the subway from the 161st Street station to the 170th Street station.  (Photo by Andrew Renneisen/Getty Images)