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1978 Iowa U.S. House District 3 Election
Iowa · 2 candidates
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. Senate elections come from the MIT Election Data and Science Lab (1976–2024).