| Jake Highfill | American Petroleum Institute | Withdrawn | GA91 |
| Jake Highfill | American Petroleum Institute | Supporting | GA91 |
| Tony Phillips | American Petroleum Institute | Supporting | GA91 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA91 |
| Jefferson Fink | Conservation Districts of Iowa | Undecided | GA91 |
| Jim Obradovich | Conservation Districts of Iowa | Undecided | GA91 |
| Victoria Sinclair | Conservation Districts of Iowa | Undecided | GA91 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA91 |
| Todd Coffelt | Iowa Dept. of Natural Resources | Undecided | GA91 |
| Kerri Johannsen | Iowa Environmental Council | Opposing | GA91 |
| Michael Schmidt | Iowa Environmental Council | Opposing | GA91 |
| Noah Hackbart | Iowa Environmental Council | Opposing | GA91 |
| Sarah Green | Iowa Environmental Council | Opposing | GA91 |
| Threase Harms | Iowa Environmental Council | Opposing | GA91 |
| Kevin Kuhle | Iowa Farm Bureau Federation | Undecided | GA91 |
| Matt Gronewald | Iowa Farm Bureau Federation | Undecided | GA91 |
| Matthew Steinfeldt | Iowa Farm Bureau Federation | Undecided | GA91 |
| Jefferson Fink | Iowa Society of Solid Waste Operations (ISOSWO) | Undecided | GA91 |
| Jim Obradovich | Iowa Society of Solid Waste Operations (ISOSWO) | Undecided | GA91 |
| Victoria Sinclair | Iowa Society of Solid Waste Operations (ISOSWO) | Undecided | GA91 |
| Dane Schumann | Izaak Walton League - Iowa Division | Undecided | GA91 |
| BRITTANY LUMLEY | Koloma | Supporting | GA91 |
| Courtney Craig | Koloma | Supporting | GA91 |
| Elliott Meyer | Koloma | Supporting | GA91 |
| Jeffrey Boeyink | Koloma | Supporting | GA91 |
| Mark Joyce | Koloma | Supporting | GA91 |