1976Final results
1976 election for Iowa's 3rd District
U.S. House · Iowa
Chuck Grassley (R) won with 56.5% of the vote, defeating Stephen J. Rapp (D) by 12.9 points.
Chuck GrassleyRepublican · winner
56.5%117,957
Stephen J. RappDemocrat
43.5%90,981
208,938 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The seat over time
D − R margin in this seat's races around 1976
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET