North Dakota held a primary on June 8. The three qualified parties were Republican, Democratic, and Libertarian. Two Libertarians ran for statewide office. They each got enough votes in the open primary to qualify for the November ballot.

North Dakota is the only state in which a ballot-qualified party cannot nominate candidates in its own primary unless its candidates (whose names are printed on the primary ballot) poll a minimum number of votes. Statewide nominees must poll 300 votes.

North Dakota is the only state that does not have voter registration. North Dakota party primaries are open. Anyone who shows up to vote on primary day decides which party’s primary to vote in.