| Scott Newhard | Associated General Contractors of Iowa | Undecided | GA91 |
| Jefferson Fink | Conservation Districts of Iowa | Undecided | GA91 |
| Jim Obradovich | Conservation Districts of Iowa | Undecided | GA91 |
| Michael Triplett | Iowa Alliance of Surety Companies | Undecided | GA91 |
| Briana Kouma | Iowa Chapter of Sierra Club | Undecided | GA91 |
| Jessica Mazour | Iowa Chapter of Sierra Club | Undecided | GA91 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA91 |
| Haley Hook | Iowa Department of Agriculture & Land Stewardship | Undecided | GA91 |
| Michael Triplett | Iowa Limestone Producers Association | Undecided | GA91 |
| Andrea Woodard | Iowa State Association of Counties | Undecided | GA91 |
| Beth Manley | Iowa State Association of Counties | Undecided | GA91 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA91 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA91 |
| Andrea Woodard | Iowa State Association of County Supervisors | Undecided | GA91 |
| Beth Manley | Iowa State Association of County Supervisors | Undecided | GA91 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA91 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA91 |
| Mona Bond | Manatts Inc. | Undecided | GA91 |
| Jeff Smith | Marion County Board of Supervisors | Supporting | GA91 |
| Kellie Paschke | Marion County Board of Supervisors | Supporting | GA91 |
| Maggie Smith-Fitzgerald | Marion County Board of Supervisors | Supporting | GA91 |
| Matt Fitzgerald | Marion County Board of Supervisors | Supporting | GA91 |