2018Final results
2018 election for South Dakota Auditor
Auditor · South Dakota
Richard Sattgast (R) won with 64.0% of the vote, defeating Tom Cool (D) by 28.0 points.
Richard SattgastRepublican · winner
64.0%201,806
Tom CoolDemocrat
36.0%113,418
315,224 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET