2010 Iowa U.S. Senate Election

Iowa · 3 candidates · See every 2010 U.S. Senate race

Who won the 2010 Iowa U.S. Senate Election?

Charles E. Grassley won the 2010 Iowa U.S. Senate Election. Charles E. Grassley received 718,215 popular votes (64.35%). The main challenger was Roxanne Conlin (33.3%).

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

Grassley +31.0 pts · won by 346,529 votes

Charles E. Grassley RepublicanWINNER64.35%

718,215 votes

Roxanne Conlin Democratic33.3%

371,686 votes

John HeiderscheitLibertarian2.27%

25,290 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.