1990Final results
1990 election for South Dakota Legislative District 19
South Dakota State Senate · South Dakota
Carrol Allen (D) won with 56.5% of the vote, defeating Donald D. Thompson (R) by 12.9 points.
Carrol AllenDemocrat · winner · incumbent
56.5%3,526
Donald D. ThompsonRepublican
43.5%2,720
6,246 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 1990
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET