New Hampshire Primary Voting

New Hampshire primary voters wait for their voting precinct to open outside Parker-Varney Elementary School, Tuesday, Feb. 11, 2020, in Manchester, N.H.

Voting precinct workers take a group photograph in Manchester, N.H., Feb. 11, 2020.

A woman takes a Democratic ballot to vote in Manchester, N.H., Feb. 11, 2020.

A man walks out of a voting booth during the New Hampshire Primary in Manchester, N.H., Feb. 11, 2020.

An election worker holds a roll of "I Voted" stickers in Manchester, N.H., Feb. 11, 2020.

Democratic presidential candidate former South Bend, Ind., Mayor Pete Buttigieg meets with people outside a polling place in Manchester.

Democratic presidential candidate Sen. Amy Klobuchar greets supporters in Manchester, N.H., Feb. 11, 2020.

Democratic presidential candidate Sen. Bernie Sanders, right, and Rep. Alexandria Ocasio-Cortez campaign in Durham, N.H.

A worker preparess the stage for a primary election night rally for Democratic presidential candidate Sen. Elizabeth Warren, Feb. 11, 2020, in Nashua, N.H.

Democratic presidential candidate former Vice President Joe Biden, during a campaign event at St. George Greek Orthodox Cathedral, Feb. 10, 2020, in Manchester, N.H.