1990Flipped from RepublicanFinal resultsIncumbent defeated
1990 election for South Dakota Legislative District 22
South Dakota State Senate · South Dakota
Joann Morfordburg (D) won with 57.7% of the vote, defeating Clyde E. Streff (R) by 15.4 points, a seat Republicans won last time.
Joann MorfordburgDemocrat · winner
57.7%4,579
Clyde E. StreffRepublican · incumbent
42.3%3,360
7,939 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