1990Final results
1990 election for Iowa Senate District 45
Iowa State Senate · Iowa
James R. Riordan (D) won with 61.7% of the vote, defeating Jerry D. Slater (R) by 23.3 points.
James R. RiordanDemocrat · winner · incumbent
61.7%12,681
Jerry D. SlaterRepublican
38.3%7,881
20,562 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