2020 United States Senate election in South Dakota

An election happened on November 3, 2020, to elect a Senator from the U.S. state of South Dakota. The two people in the election were Mike Rounds (Republican Party) and Dan Ahlers (Democratic Party). Mike Rounds won reelection for a second term.
A primary election was held for each party, Mike Rounds beat Scyller Borglum in the Republican Party primary and Dan Ahlers was the only person in the Democratic Party primary, so he won.
Democratic Party primary.
Dan Ahlers did not have an opponent in the Democratic Party primary.