President Biden has won the North Dakota Democratic presidential primary, according to a projection from Decision Desk HQ.

Biden already mathematically clinched the Democratic nomination earlier this month, and the win will add to his delegate total. North Dakota has 13 pledged delegates up for grabs in its primary, which was conducted almost entirely with mail-in ballots.

Biden lost the state during the 2020 Democratic nominating process to Sen. Bernie Sanders (I-Vt.). The state is reliably red and voted for former President Trump in both the 2016 and 2020 general elections by significant margins.

Biden was the only major candidate on the ballot in the primary, but he did face opposition from minor candidates like author Marianne Williamson and entrepreneur Jason Palmer.