This is the 1992 race. The latest: 2026 →

1992Final results

1992 election for South Dakota Legislative District 9

South Dakota State Senate · South Dakota

Mark E. Rogen (D) won with 55.6% of the vote, defeating Clarence Kooistra (R) by 11.1 points.

Mark E. RogenDemocrat · winner
55.6%5,099
44.4%4,076
9,175 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 1992

Races before and after

EvenR+22.51980R+2.91988D+8.61990D+11.11992D+13.61994R+18.31996

Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET