2018Final results
2018 election for Iowa Senate District 23
Iowa State Senate · Iowa
Herman Quirmbach (D) won with 74.8% of the vote, defeating Eric Cooper (Lib) by 50.1 points.
Herman QuirmbachDemocrat · winner · incumbent
74.8%19,020
Eric CooperLibertarian
24.7%6,273
Write-ins and other votesOther party
0.6%141
25,434 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET