Democratic Presidential Candidate Hillary Clinton Campaigns Throughout Iowa Ahead Of State's Caucus [Getty Images]

CEDAR RAPIDS, IA - JANUARY 30: A young supporter hugs democratic presidential candidate former Secretary of State Hillary Clinton during a "get out to caucus" event at Washington High School on January 30, 2016 in Cedar Rapids, Iowa. With two days to go before the Iowa caucuses, Hillary Clinton is campaigning throughout Iowa. (Photo by Justin Sullivan/Getty Images)

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