1986Final results
1986 election for South Dakota Legislative District 13
South Dakota State Senate · South Dakota
Gary W. Hanson (R) won with 51.4% of the vote, defeating Thomas K. Wilka (D) by 2.8 points.
Gary W. HansonRepublican · winner · incumbent
51.4%4,906
Thomas K. WilkaDemocrat
48.6%4,638
9,544 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1986
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET