1984Flipped from DemocraticFinal results
1984 election for South Dakota Legislative District 23
South Dakota State Senate · South Dakota
Leland Kleinsasser (R) won with 59.2% of the vote, defeating Donald E. Cook (D) by 18.3 points, a seat Democrats won last time.
Leland KleinsasserRepublican · winner · incumbent
59.2%5,445
Donald E. CookDemocrat
40.8%3,759
9,204 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