1970Final resultsIncumbent defeated
1970 election for South Dakota Legislative District 8
South Dakota House of Representatives · South Dakota
2 seats: Harold Sieh (R), Donald Jorgensen (D) won.
2 seatsHarold SiehRepublican · winner
27.5%3,013
Donald JorgensenDemocrat · winner
24.5%2,680
Frank McKenzieRepublican · incumbent
24.2%2,656
Orville SmithDemocrat
23.8%2,610
10,959 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 1970
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET