2010 general · November 2, 2010
2010 Iowa State Senate election results, district by district
Every Iowa State Senate district in the 2010 general election: winners, margins, unopposed seats and seats that changed party.
Seats after the election
Democrats controlled the chamber · 50 seats
After the electionD 26 · R 24
Races25
Changed party6
Unopposed28%7 races
Incumbents defeated5
Every district
D 13 · R 12
| 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 State Senate
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