1980Final results
1980 election for South Dakota Legislative District 18
South Dakota House of Representatives · South Dakota
2 seats: James A. Burg (D), Harold D. Koch (R) won.
2 seatsJames A. BurgDemocrat · winner · incumbent
31.0%5,299
Harold D. KochRepublican · winner
26.0%4,440
Jacob H. CarlsonRepublican
25.9%4,431
W. B. AlarieDemocrat
17.2%2,938
17,108 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 1980
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET