1990Final results
1990 election for South Dakota Legislative District 1
South Dakota House of Representatives · South Dakota
2 seats: David Gleason (D), Mona Greseth (R) won.
2 seatsDavid GleasonDemocrat · winner
36.1%4,483
Mona GresethRepublican · winner
33.8%4,188
Herbert W. HeeschDemocrat
30.1%3,734
12,405 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