PolitiFinder

1980 Iowa U.S. Senate Election

Iowa · 5 candidates · See every 1980 U.S. Senate race

Who won the 1980 Iowa U.S. Senate Election?

Charles E. Grassley won the 1980 Iowa U.S. Senate Election. Charles E. Grassley received 683,014 popular votes (53.49%). The main challenger was John Culver (45.54%).

See the full head-to-head between Grassley and Culver

Grassley +8.0 pts · won by 101,469 votes
Charles E. GrassleyRepublicanWINNER53.49%
683,014 votes
John CulverDemocratic45.54%
581,545 votes
Garry de YoungBy Petition0.46%
5,858 votes
Robert V HengererLibertarian0.33%
4,233 votes
John Ingram HendersonBy Petition0.18%
2,336 votes
Popular-vote totals for U.S. Senate elections come from the MIT Election Data and Science Lab (1976–2024).

Data last verified July 28, 2026.