2008 United States Senate election in Iowa

The 2008 United States Senate election in Iowa was held on November 4, 2008. Incumbent Senator Tom Harkin sought re-election to a fifth term in office. Unlike Harkin's three previous reelection bids, he was not challenged by a sitting United States Congressman but instead faced small businessman Christopher Reed, who won the Republican primary by just a few hundred votes. Harkin defeated Reed in a landslide, winning 94 of Iowa's 99 counties. , this is the last time that a Democrat has won a U.S. Senate election in Iowa.

Candidates

 * Tom Harkin, incumbent U.S. Senator

Candidates

 * George Eichhorn, former Iowa State Representative
 * Steve Rathje, construction company executive
 * Christopher Reed, small businessman

Results
[[File:2008 United States Senate Republican primary election in Iowa results map by county.svg|thumb|Republican primary results by county {{legend|#e27f7f|Reed}}

{{legend|#ffc8cd|30–40%}}

{{legend|#ffb2b2|40–50%}}

{{legend|#e27f7f|50–60%}} {{legend|#5bc75b|Eichhorn}}

{{legend|#aae5aa|30–40%}}

{{legend|#87de87|40–50%}}

{{legend|#5bc75b|50–60%}}

{{legend|#309a30|70–80%}} {{legend|#ff7644|Rathje}}

{{legend|#ffac8e|30–40%}}

{{legend|#ff8e65|40–50%}}

{{legend|#ff7644|50–60%}} ]]

Counties that flipped from Republican to Democratic

 * Butler (Largest city: Parkersburg)
 * Crawford (Largest city: Denison)
 * Delaware (Largest city: Manchester)
 * Van Buren (Largest city: Keosauqua)
 * Plymouth (largest city: Le Mars)
 * Grundy (largest city: Grundy Center)
 * Harrison (largest city: Missouri Valley)
 * Cass (largest city: Atlantic)
 * Ida (largest city: Ida Grove)
 * Fremont (largest city: Sidney)
 * Pottawattamie (largest city: Council Bluffs)
 * Sac (largest city: Sac City)
 * Shelby (largest city: Harlan)
 * Marion (largest city: Pella)
 * Mills (largest city: Glenwood)
 * Montgomery (largest city: Red Oak)
 * Mahaska (largest city: Oskaloosa)