1978Final results
1978 election for South Dakota Legislative District 28
South Dakota State Senate · South Dakota
Eldon S. Jensen (R) won with 54.3% of the vote, defeating John R. Riedy (D) by 8.7 points.
Eldon S. JensenRepublican · winner · incumbent
54.3%4,333
John R. RiedyDemocrat
45.7%3,642
7,975 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