2016Final results
2016 election for Iowa Senate District 38
Iowa State Senate · Iowa
Tim Kapucian (R) won with 60.0% of the vote, defeating Dennis Mathahs (D) by 26.0 points.
Tim KapucianRepublican · winner · incumbent
60.0%18,567
Dennis MathahsDemocrat
34.0%10,524
John GeorgeLibertarian
5.9%1,810
30,928 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET
The seat over time
D − R margin in this seat's races around 2016
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET