2020Final results
2020 election for South Dakota Legislative District 11
South Dakota State Senate · South Dakota
Jim Stalzer (R) won with 60.5% of the vote, defeating Tom Cool (D) by 20.9 points.
Jim StalzerRepublican · winner · incumbent
60.5%8,244
Tom CoolDemocrat
39.5%5,389
13,633 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