2010 general · November 2, 2010
2010 Iowa election results
Every race on Iowa's ballot in the 2010 general election: winners, margins and seats that changed party.
Races132
Changed party25
Unopposed28%37 races
Incumbents defeated18
U.S. Senate
R 1
| Race | Winner | Won by | Notes |
|---|---|---|---|
| Iowa | Chuck Grassley (R) | 31.0 |
Governors
R 1
| Race | Winner | Won by | Notes |
|---|---|---|---|
| Iowa | Terry E. Branstad (R) | 10.0 | Flipped |
U.S. House
D 3 · R 2
| Race | Winner | Won by | Notes |
|---|---|---|---|
| IA-1 | Bruce L. Braley (D) | 2.0 | |
| IA-2 | David Loebsack (D) | 5.1 | |
| IA-3 | Leonard L. Boswell (D) | 4.2 | |
| IA-4 | Tom Latham (R) | 33.7 | |
| IA-5 | Steve King (R) | 33.4 |
Iowa State Senate
D 13 · R 12 · 6 changed party
| Race | Winner | Won by | Notes |
|---|---|---|---|
| SD-1 | Rick Bertrand (R) | 1.5 | Flipped |
| SD-3 | David J. Johnson (R) | Unopposed | |
| SD-5 | Robert Bacon (R) | 8.1 | FlippedIncumbent lost |
| SD-7 | Amanda Ragan (D) | 20.8 | |
| SD-9 | Bill Dix (R) | 15.7 | FlippedIncumbent lost |
| SD-11 | Bill Dotzler (D) | 26.1 | |
| SD-13 | Tod R. Bowman (D) | 0.4 | |
| SD-15 | Robert E. Dvorsky (D) | 49.1 | |
| SD-17 | Wally E. Horn (D) | Unopposed | |
| SD-19 | Robert M. Hogg (D) | Unopposed | |
| SD-21 | Dennis H. Black (D) | 4.6 | |
| SD-23 | Herman Quirmbach (D) | 5.7 | |
| SD-25 | Daryl Beall (D) | 8.5 | |
| SD-27 | Bill Anderson (R) | 24.8 | |
| SD-29 | Nancy Boettger (R) | Unopposed | |
| SD-31 | Matt McCoy (D) | 30.9 | |
| SD-33 | Jack Hatch (D) | Unopposed | |
| SD-35 | Larry Noble (R) | Unopposed | |
| SD-37 | Kent Sorenson (R) | 17.9 | FlippedIncumbent lost |
| SD-39 | Joe Bolkcom (D) | Unopposed | |
| SD-41 | Roby Smith (R) | 19.0 | |
| SD-43 | Joe M. Seng (D) | 24.6 | |
| SD-45 | Sandra H. Greiner (R) | 6.7 | FlippedIncumbent lost |
| SD-47 | Mark Chelgren (R) | 0.1 | FlippedIncumbent lost |
| SD-49 | Hubert Houser (R) | 47.9 |
Iowa House of Representatives
D 40 · R 60 · 18 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: Algara, Carlos; Amlani, Sharif (Harvard Dataverse); Harvard Dataverse / Carl Klarner; MIT Election Data and Science Lab