PolitiFinder

1978 Iowa U.S. House District 3 Election

Iowa · 2 candidates · See every 1978 U.S. House race

Who won the 1978 Iowa U.S. House District 3 Election?

Charles E. Grassley won the 1978 Iowa U.S. House District 3 Election. Charles E. Grassley received 103,659 popular votes (74.82%). The main challenger was John Knudson (25.18%).

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

Grassley +49.6 pts · won by 68,779 votes
Charles E. GrassleyRepublicanWINNER74.82%
103,659 votes
John KnudsonDemocratic25.18%
34,880 votes
Popular-vote totals for U.S. House elections come from the MIT Election Data and Science Lab (1976–2024).

Data last verified July 28, 2026.