![](https://senatemajority.com/wp-content/uploads/topper-inner.jpg)
the current make-up of the Senate
Our Work
South Dakota
South Dakota’s current U.S. Senators are John Thune (R) and Mike Rounds (R). John Thune has served since 2005. Mike Rounds has served since 2015. South Dakota’s next U.S. Senate election is in 2026.
Senate Majority PAC is working to continue supporting Democratic candidates up and down the ballot. Every grassroots donation matters, donate now.
Current Senators
John Thune (R)
Election Year: 2028
![Black and white headshot of South Dakota Republican Senate candidate John Thune not supported by Senate Majority PAC.](https://senatemajority.com/wp-content/uploads/john-sd.jpg)
Mike Rounds (R)
Election Year: 2026
![Black and white headshot of South Dakota Republican Senate candidate Mike Rounds not supported by Senate Majority PAC.](https://senatemajority.com/wp-content/uploads/mike-sd.jpg)