- Bill Dix
- Jack Whitver
- Joni Ernst
- Randy Feenstra
- David Johnson
- Tim Kapucian
- Roby Smith
- Bill Anderson
- Jerry Behn
- Nancy Boettger
- Michael Breitbach
- Jake Chapman
- Mark Chelgren
- Sandra H. Greiner
- Dennis Guth
- Hubert Houser
- Ken Rozenboom
- Charles Schneider
- Mark Segebart
- Amy Sinclair
- Rick Bertrand
- Brad Zaun
- Dan Zumbach
Senator Name | Hometown | District | ||
| Woodbury | 3 | |||
| Boone | 24 | |||
| Shelby | 9 | |||
| Clayton | 28 | |||
| Dallas | 10 | |||
| Wapello | 41 | |||
| Washington | 39 | |||
| Hancock | 4 | |||
| Pottawattamie | 11 | |||
| Mahaska | 40 | |||
| Dallas | 22 | |||
| Crawford | 6 | |||
| Wayne | 14 | |||
| Woodbury | 7 | |||
| Polk | 20 | |||
| Delaware | 48 | |||