1984Final resultsIncumbent defeated
1984 election for South Dakota Legislative District 19
South Dakota State Senate · South Dakota
Donald C. Peterson (R) won with 57.9% of the vote, defeating Carrol Allen (D) by 15.8 points.
Donald C. PetersonRepublican · winner · incumbent
57.9%4,523
Carrol AllenDemocrat · incumbent
42.1%3,287
7,810 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 1984
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET