| Marc Beltrame | Ducks Unlimited, Inc. | Undecided | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Supporting | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA89 |
| Sydney Gangestad | Iowa Confluence Water Trails | Supporting | GA89 |
| Tim Coonan | Iowa Confluence Water Trails | Supporting | GA89 |
| Jim Obradovich | Iowa Conservation Alliance | Undecided | GA89 |
| Robert Mulqueen | Iowa Conservation Alliance | Undecided | GA89 |
| Todd Coffelt | Iowa Dept. of Natural Resources | Undecided | GA89 |
| Chelsea Hoye | Iowa Rivers Revival | Supporting | GA89 |
| Emilee Harris-Puricelli | Iowa Rivers Revival | Supporting | GA89 |
| Nick Laning | Iowa Rivers Revival | Supporting | GA89 |
| Threase Harms | Iowa Rivers Revival | Supporting | GA89 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA89 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA89 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA89 |
| William Peterson | Iowa State Association of Counties | Undecided | GA89 |
| MIke Delaney | Izaak Walton League - Iowa Division | Supporting | GA89 |
| Amy Campbell | League of Women Voters of Iowa | Undecided | GA89 |
| Craig Patterson | League of Women Voters of Iowa | Undecided | GA89 |
| Amy Campbell | Personal Interest-Amy Campbell | Supporting | GA89 |
| Amy Campbell | Polk County - Board of Supervisors | Undecided | GA89 |
| Craig Patterson | Polk County - Board of Supervisors | Undecided | GA89 |
| Christopher Rants | State Police Officers Council | Supporting | GA89 |
| John Cacciatore | State Police Officers Council | Supporting | GA89 |