2024Final results
2024 election for Iowa House District 40
Iowa House of Representatives · Iowa
Bill Gustoff (R) won with 50.9% of the vote, defeating Heather Sievers (D) by 1.9 points.
Bill GustoffRepublican · winner
50.9%8,720
Heather SieversDemocrat
49.0%8,402
17,146 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 12:13 PM ET
The seat over time
D − R margin in this seat's races around 2024
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 12:13 PM ET