1990Flipped from DemocraticFinal resultsIncumbent defeated
1990 election for Minnesota House District 18A
Minnesota House of Representatives · Minnesota
Leroy Koppendrayer (R) won with 52.0% of the vote, defeating Jerome Peterson (D) by 4.0 points, a seat Democrats won last time.
Leroy KoppendrayerRepublican · winner
52.0%6,519
Jerome PetersonDemocrat · incumbent
48.0%6,020
12,539 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