| Christopher Rants | Center for Rural Affairs | Supporting | GA91 |
| Cynthia Farmer | Center for Rural Affairs | Supporting | GA91 |
| John Cacciatore | Center for Rural Affairs | Supporting | GA91 |
| Jefferson Fink | Conservation Districts of Iowa | Supporting | GA91 |
| Jim Obradovich | Conservation Districts of Iowa | Supporting | GA91 |
| Victoria Sinclair | Conservation Districts of Iowa | Supporting | GA91 |
| Nick Laning | Des Moines Water Works | Supporting | GA91 |
| Noah Hackbart | Des Moines Water Works | Supporting | GA91 |
| Threase Harms | Des Moines Water Works | Supporting | GA91 |
| Arthur Roche | Dubuque Area Land and Water Legacy | Supporting | GA91 |
| David Peck | Ducks Unlimited, Inc. | Supporting | GA91 |
| Marc Beltrame | Ducks Unlimited, Inc. | Supporting | GA91 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Supporting | GA91 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA91 |
| Jefferson Fink | Iowa Conservation Alliance | Supporting | GA91 |
| Jim Obradovich | Iowa Conservation Alliance | Supporting | GA91 |
| Victoria Sinclair | Iowa Conservation Alliance | Supporting | GA91 |
| Kelly Meyers | Iowa County Attorneys Association | Undecided | GA91 |
| Tom Ferguson | Iowa County Attorneys Association | Undecided | GA91 |
| Deanna Triplett | Iowa Economic Development Authority | Undecided | GA91 |
| Cody Smith | Iowa Environmental Council | Supporting | GA91 |
| Colleen Fowle | Iowa Environmental Council | Supporting | GA91 |
| Kerri Johannsen | Iowa Environmental Council | Supporting | GA91 |
| Michael Schmidt | Iowa Environmental Council | Supporting | GA91 |
| Noah Hackbart | Iowa Environmental Council | Supporting | GA91 |
| Sarah Green | Iowa Environmental Council | Supporting | GA91 |
| Threase Harms | Iowa Environmental Council | Supporting | GA91 |
| Kevin Kuhle | Iowa Farm Bureau Federation | Opposing | GA91 |
| Matt Gronewald | Iowa Farm Bureau Federation | Opposing | GA91 |
| Matthew Steinfeldt | Iowa Farm Bureau Federation | Opposing | GA91 |
| Noah Hackbart | Iowa Farmers Union | Supporting | GA91 |
| Threase Harms | Iowa Farmers Union | Supporting | GA91 |
| Blake DeRouchey | Iowa Homeland Security & Emergency Management Div. | Undecided | GA91 |
| Andrea Woodard | Iowa State Association of Counties | Supporting | GA91 |
| Jamie Cashman | Iowa State Association of Counties | Supporting | GA91 |
| Lucas Beenken | Iowa State Association of Counties | Supporting | GA91 |
| Andrea Woodard | Iowa State Association of County Supervisors | Supporting | GA91 |
| Jamie Cashman | Iowa State Association of County Supervisors | Supporting | GA91 |
| Lucas Beenken | Iowa State Association of County Supervisors | Supporting | GA91 |
| Nate Ristow | Iowa Taxpayers Association | Undecided | GA91 |
| Dane Schumann | Izaak Walton League - Iowa Division | Supporting | GA91 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA91 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA91 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA91 |
| Kelly Meyers | Marion County Board of Supervisors | Undecided | GA91 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Undecided | GA91 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA91 |
| Chloe Gayer | Professional Developers of Iowa (PDI) | Undecided | GA91 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA91 |
| Clara Wulfsen | The Nature Conservancy | Supporting | GA91 |
| Doug Struyk | The Nature Conservancy | Supporting | GA91 |
| Jennifer Dorman | The Nature Conservancy | Supporting | GA91 |
| Jim Carney | The Nature Conservancy | Supporting | GA91 |
| Gary Grant | Urban County Coalition | Undecided | GA91 |
| Larry Murphy | Urban County Coalition | Undecided | GA91 |