1984 Iowa U.S. Senate Election

Iowa · 3 candidates · See every 1984 U.S. Senate race

Who won the 1984 Iowa U.S. Senate Election?

Tom Harkin won the 1984 Iowa U.S. Senate Election. Tom Harkin received 716,883 popular votes (55.46%). The main challenger was Roger W. Jepsen (43.66%).

See the full head-to-head between Harkin and Jepsen

Harkin +11.8 pts · won by 152,502 votes

Tom Harkin DemocraticWINNER55.46%

716,883 votes

Roger W. Jepsen Republican43.66%

564,381 votes

Garry de YoungIndependent0.85%

11,014 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.