2018Final results
2018 election for South Dakota Legislative District 13
South Dakota State Senate · South Dakota
Jack Kolbeck (R) won with 54.1% of the vote, defeating Melissa Hiatt (D) by 8.3 points.
Jack KolbeckRepublican · winner · incumbent
54.1%5,907
Melissa HiattDemocrat
45.9%5,002
10,909 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