2018Final results
2018 election for Iowa House District 21
Iowa House of Representatives · Iowa
Tom Moore (R) won with 65.7% of the vote, defeating Denise Obrien (D) by 31.4 points.
Tom MooreRepublican · winner · incumbent
65.7%7,932
Denise ObrienDemocrat
34.3%4,139
12,077 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