2018Final results
2018 election for South Dakota Legislative District 25
South Dakota State Senate · South Dakota
Kris Langer (R) won with 68.3% of the vote, defeating Brian Wirth (Ind) by 48.3 points.
Kris LangerRepublican · winner · incumbent
68.3%6,583
Brian WirthIndependent
20.0%1,931
Peter KlebanoffIndependent
11.7%1,125
9,639 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