2020Flipped from DemocraticFinal resultsIncumbent defeated
2020 election for South Dakota Legislative District 1
South Dakota State Senate · South Dakota
Michael Rohl (R) won with 55.2% of the vote, defeating Susan Wismer (D) by 10.4 points, a seat Democrats won last time.
Michael RohlRepublican · winner
55.2%6,051
Susan WismerDemocrat · incumbent
44.8%4,913
10,964 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
The seat over time
D − R margin in this seat's races around 2020
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET