The 2016 New Hampshire Democratic presidential primary was held on Tuesday February 9. As per tradition, it was the first primary and second nominating contest overall to take place in the cycle. Bernie Sanders defeated Hillary Clinton in the primary by a margin of more than 22% in the popular vote. Sanders claimed 15 delegates to Clinton's 9.

Presidential primaries and caucuses were organized by the Democratic Party to select the 4,051 delegates to the 2016 Democratic National Convention held July 25–28 and determine the nominee for president in the 2016 United States presidential election. The elections took place within all fifty U.S. states, the District of Columbia, five U.S. territories, and Democrats Abroad and occurred between February 1 and June 14, 2016.