Bill Clinton hits the campaign trail for Hillary Clinton(13 images)

Former President of the United States Bill Clinton addresses his wife Hillary Clinton's supporters across the nation ahead of the 2016 caucuses. Hillary Clinton is running against former Maryland Gov. Martin O'Malley and Vermont Sen. Bernie Sanders.

Former President Bill Clinton makes remarks as he campaigns for his wife, Hillary Clinton, a 2016 Democratic presidential contender, at the Czech & Slovak Museum, January 7, 2016, in Cedar Rapids, Iowa. Hillary Clinton is running against former Maryland Gov. Martin O'Malley and Vermont Sen. Bernie Sanders ahead of Iowa's first-in-the-nation caucuses February 1. Photo by Mike Theiler/UPI | License Photo
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