PolitiFinder

1990 Iowa U.S. Senate Election

Iowa · 2 candidates · See every 1990 U.S. Senate race

Who won the 1990 Iowa U.S. Senate Election?

Tom Harkin won the 1990 Iowa U.S. Senate Election. Tom Harkin received 535,975 popular votes (54.47%). The main challenger was Thomas J. Tauke (45.42%).

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

Harkin +9.0 pts · won by 89,106 votes
Tom HarkinDemocraticWINNER54.47%
535,975 votes
Thomas J. TaukeRepublican45.42%
446,869 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.