1980Final resultsIncumbent defeated

1980 election for South Dakota Legislative District 27

Name: 1980 election for South Dakota Legislative District 27
Start: 1980-11-04
Location: South Dakota

South Dakota State Senate · South Dakota

Lyndell Petersen (R) won with 27.1% of the vote, defeating Donald L. Frankenfeld (R) by 1.2 points.

Lyndell PetersenRepublican · winner · incumbent

27.1%17,711

Donald L. FrankenfeldRepublican · incumbent

26.0%16,957

Carl HamRepublican · incumbent

25.8%16,853

11.6%7,560

9.6%6,261

65,342 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

Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET