Trump easily won North Dakota 65.1% to 31.8%, a margin of 33.35%, about three points down from his 36-point victory in 2016. Joe Biden won the same two counties Walter Mondale, Al Gore and Hillary Clinton won in 1984, 2000 and 2016 respectively: the majority-Native American counties of Rolette and Sioux, both of which have long been Democratic strongholds. However, Biden only came 2.7 points short of winning Cass County, which holds the state's largest city of Fargo, as compared to Clinton's 10.5-point loss in 2016.
Biden became the first Democrat to win the presidency without winning Sargent County since Franklin D. Roosevelt in 1944 and the first without Benson, Ransom, or Steele Counties since John F. Kennedy in 1960. Despite Biden's modest improvement over Hillary Clinton four years earlier, this remains the second-worst Democratic performance in the state since 1980. Trump's vote share was also the largest for any candidate in the state since 1952.
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