2004 general · November 2, 2004
2004 Iowa election results
Every race on Iowa's ballot in the 2004 general election: winners, margins and seats that changed party.
Races132
Changed party9
Unopposed30%40 races
Incumbents defeated7
President
R 1
| Race | Winner | Won by | Notes |
|---|---|---|---|
| Iowa | George W. Bush (R) | 0.7 |
U.S. Senate
R 1
| Race | Winner | Won by | Notes |
|---|---|---|---|
| Iowa | Chuck Grassley (R) | 42.3 |
U.S. House
D 1 · R 4
| Race | Winner | Won by | Notes |
|---|---|---|---|
| IA-1 | James Nussle (R) | 11.9 | |
| IA-2 | James Leach (R) | 19.8 | |
| IA-3 | Leonard L. Boswell (D) | 10.5 | |
| IA-4 | Tom Latham (R) | 21.9 | |
| IA-5 | Steve King (R) | 26.7 |
Iowa State Senate
D 11 · R 14 · 2 changed party
| Race | Winner | Won by | Notes |
|---|---|---|---|
| SD-2 | Dave Mulder (R) | Unopposed | |
| SD-4 | John P. Kibbie (D) | 20.0 | |
| SD-6 | E. Thurman Gaskill (R) | 16.9 | |
| SD-8 | Mark Zieman (R) | 10.9 | |
| SD-10 | Jeff Danielson (D) | 7.8 | |
| SD-12 | Brian Schoenjahn (D) | 5.6 | |
| SD-14 | Michael W. Connolly (D) | Unopposed | |
| SD-16 | Tom Hancock (D) | 0.4 | FlippedIncumbent lost |
| SD-18 | Mary A. Lundby (R) | 19.5 | |
| SD-20 | John Putney (R) | Unopposed | |
| SD-22 | Larry McKibben (R) | 2.9 | |
| SD-24 | Jerry Behn (R) | 14.8 | |
| SD-26 | Steve Kettering (R) | Unopposed | |
| SD-28 | James Seymour (R) | Unopposed | |
| SD-30 | Pat Ward (R) | 26.0 | |
| SD-32 | Brad Zaun (R) | 15.8 | |
| SD-34 | Dick L. Dearden (D) | Unopposed | |
| SD-36 | Paul McKinley (R) | 20.7 | |
| SD-38 | Thomas J. Rielly (D) | 3.1 | Incumbent lost |
| SD-40 | Jim Hahn (R) | 7.1 | |
| SD-42 | Frank B. Wood (D) | 1.6 | FlippedIncumbent lost |
| SD-44 | Thomas G. Courtney (D) | Unopposed | |
| SD-46 | Eugene Fraise (D) | 6.5 | |
| SD-48 | Jeff Angelo (R) | 7.9 | |
| SD-50 | Michael E. Gronstal (D) | 9.0 |
Iowa House of Representatives
D 49 · R 51 · 7 changed party
Iowa
Results are each source's final count; margins are the winner's lead over the runner-up in points of the vote. Source: Harvard Dataverse / Carl Klarner; MIT Election Data and Science Lab