2012 general · November 6, 2012
2012 Iowa State Senate election results, district by district
Every Iowa State Senate district in the 2012 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
Races26
Changed party0
Unopposed15%4 races
Incumbents defeated2
Every district
D 13 · R 13
| Race | Winner | Won by | Notes |
|---|---|---|---|
| SD-2 | Randy Feenstra (R) | Unopposed | |
| SD-4 | Dennis Guth (R) | 5.7 | |
| SD-6 | Mark Segebart (R) | 14.1 | |
| SD-8 | Michael E. Gronstal (D) | 10.6 | |
| SD-10 | Jake Chapman (R) | Unopposed | |
| SD-12 | Joni Ernst (R) | Unopposed | |
| SD-14 | Amy Sinclair (R) | 21.8 | |
| SD-16 | Dick L. Dearden (D) | 30.9 | |
| SD-18 | Janet Petersen (D) | 38.2 | |
| SD-20 | Brad Zaun (R) | Unopposed | |
| SD-22 | Pat Ward (R) | 13.1 | |
| SD-24 | Jerry Behn (R) | 9.6 | |
| SD-26 | Mary Jo Wilhelm (D) | 0.4 | Incumbent lost |
| SD-28 | Michael Breitbach (R) | 0.1 | |
| SD-30 | Jeff Danielson (D) | 2.0 | |
| SD-32 | Brian Schoenjahn (D) | 6.5 | |
| SD-34 | Liz Mathis (D) | 22.5 | |
| SD-36 | Steve Sodders (D) | 8.1 | |
| SD-38 | Tim Kapucian (R) | 9.5 | |
| SD-40 | Ken Rozenboom (R) | 20.3 | |
| SD-42 | Rich Taylor (D) | 6.0 | |
| SD-44 | Thomas G. Courtney (D) | 14.0 | |
| SD-46 | Chris Brase (D) | 6.7 | Incumbent lost |
| SD-48 | Dan Zumbach (R) | 1.7 | |
| SD-49 | Rita Hart (D) | 9.2 | |
| SD-50 | Pam Jochum (D) | 36.0 |
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