| Jon Murphy | American Planning Association Iowa Chapter | Undecided | GA90 |
| Tom Cope | American Planning Association Iowa Chapter | Undecided | GA90 |
| Christopher Rants | Center for Rural Affairs | Undecided | GA90 |
| Cynthia Farmer | Center for Rural Affairs | Undecided | GA90 |
| John Cacciatore | Center for Rural Affairs | Undecided | GA90 |
| Jefferson Fink | Conservation Districts of Iowa | Supporting | GA90 |
| Jim Obradovich | Conservation Districts of Iowa | Supporting | GA90 |
| Victoria Sinclair | Conservation Districts of Iowa | Supporting | GA90 |
| David Peck | Ducks Unlimited, Inc. | Undecided | GA90 |
| Marc Beltrame | Ducks Unlimited, Inc. | Undecided | GA90 |
| David Peck | Iowa Association of Municipal Utilities | Undecided | GA90 |
| Marc Beltrame | Iowa Association of Municipal Utilities | Undecided | GA90 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA90 |
| Haley Hook | Iowa Department of Agriculture & Land Stewardship | Supporting | GA90 |
| Todd Coffelt | Iowa Dept. of Natural Resources | Undecided | GA90 |
| John Torbert | Iowa Drainage District Association | Undecided | GA90 |
| Mona Bond | Iowa Drainage District Association | Undecided | GA90 |
| Deanna Triplett | Iowa Economic Development Authority | Undecided | GA90 |
| Chelsea Hoye | Iowa Environmental Council | Undecided | GA90 |
| Threase Harms | Iowa Environmental Council | Undecided | GA90 |
| Chelsea Hoye | Iowa Farmers Union | Undecided | GA90 |
| Threase Harms | Iowa Farmers Union | Undecided | GA90 |
| Nichole Hansen | Iowa Finance Authority | Undecided | GA90 |
| Dane Schumann | Izaak Walton League - Iowa Division | Undecided | GA90 |
| Gary Grant | Lake Delhi Combined Water Quality & Recreational Facility District | Undecided | GA90 |
| Larry Murphy | Lake Delhi Combined Water Quality & Recreational Facility District | Undecided | GA90 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA90 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA90 |
| Emily Piper | Rathbun Regional Water Association | Undecided | GA90 |
| Amber Markham | The Nature Conservancy | Undecided | GA90 |
| Doug Struyk | The Nature Conservancy | Undecided | GA90 |
| Jennifer Dorman | The Nature Conservancy | Undecided | GA90 |
| Jim Carney | The Nature Conservancy | Undecided | GA90 |
| Gary Grant | Urban County Coalition | Undecided | GA90 |
| Larry Murphy | Urban County Coalition | Undecided | GA90 |