1978Final results
1978 election for South Dakota Legislative District 21
South Dakota State Senate · South Dakota
William L. Grams (R) won with 69.0% of the vote, defeating Paul R. Venhuizen (D) by 37.9 points.
William L. GramsRepublican · winner · incumbent
69.0%4,013
Paul R. VenhuizenDemocrat
31.0%1,807
5,820 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 1978
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET