1990Final resultsIncumbent defeated
1990 election for South Dakota Legislative District 29
South Dakota House of Representatives · South Dakota
2 seats: William F. Cerny (D), John Koskan (R) won.
2 seatsWilliam F. CernyDemocrat · winner · incumbent
29.8%4,327
John KoskanRepublican · winner
27.9%4,057
Albert SchrammDemocrat · incumbent
24.5%3,556
Allen F. LairdRepublican
17.8%2,594
14,534 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 1990
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET