| Dustin Rush | Americans For Prosperity | Supporting | GA91 |
| Tyler Raygor | Americans For Prosperity | Supporting | GA91 |
| Jefferson Fink | Conservation Districts of Iowa | Undecided | GA91 |
| Jim Obradovich | Conservation Districts of Iowa | Undecided | GA91 |
| Catherine Pollard | Des Moines Water Works | Undecided | GA91 |
| Nick Laning | Des Moines Water Works | Undecided | GA91 |
| Threase Harms | Des Moines Water Works | Undecided | GA91 |
| Josh Mandelbaum | Environmental Law and Policy Center | Opposing | GA91 |
| Matt Ohloff | Environmental Law and Policy Center | Opposing | GA91 |
| Preston Moore | Humane World for Animals | Opposing | GA91 |
| Amy Campbell | Iowa Association of County Conservation Boards | Undecided | GA91 |
| Craig Patterson | Iowa Association of County Conservation Boards | Undecided | GA91 |
| Eric Goranson | Iowa Bowhunters Association | Opposing | GA91 |
| Briana Kouma | Iowa Chapter of Sierra Club | Opposing | GA91 |
| Jessica Mazour | Iowa Chapter of Sierra Club | Opposing | GA91 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA91 |
| Jefferson Fink | Iowa Conservation Alliance | Opposing | GA91 |
| Jefferson Fink | Iowa Conservation Alliance | Undecided | GA91 |
| Jim Obradovich | Iowa Conservation Alliance | Opposing | GA91 |
| Jim Obradovich | Iowa Conservation Alliance | Undecided | GA91 |
| Haley Hook | Iowa Department of Agriculture & Land Stewardship | Undecided | GA91 |
| Catherine Pollard | Iowa Environmental Council | Opposing | GA91 |
| Cody Smith | Iowa Environmental Council | Opposing | GA91 |
| Colleen Fowle | Iowa Environmental Council | Opposing | GA91 |
| Jordan Oster | Iowa Environmental Council | Opposing | GA91 |
| Kerri Johannsen | Iowa Environmental Council | Opposing | GA91 |
| Michael Schmidt | Iowa Environmental Council | Opposing | GA91 |
| Sarah Green | Iowa Environmental Council | Opposing | GA91 |
| Threase Harms | Iowa Environmental Council | Opposing | GA91 |
| Catherine Pollard | Iowa Farmers Union | Undecided | GA91 |
| Threase Harms | Iowa Farmers Union | Undecided | GA91 |
| Megan Carlson | Iowa Institute for Cooperatives | Undecided | GA91 |
| Mike St. Clair | Iowa Institute for Cooperatives | Undecided | GA91 |
| Emily Piper | Iowa Rural Water Association | Undecided | GA91 |
| Logan Shine | Iowa Rural Water Association | Undecided | GA91 |
| Phil Jeneary | Iowa Sportsmans Club | Undecided | GA91 |
| Jefferson Fink | Iowa Trappers Association | Opposing | GA91 |
| Jim Obradovich | Iowa Trappers Association | Opposing | GA91 |
| Dane Schumann | Izaak Walton League - Iowa Division | Undecided | GA91 |
| Amy Campbell | Loess Hills Alliance | Undecided | GA91 |
| Craig Patterson | Loess Hills Alliance | Undecided | GA91 |
| Amy Campbell | Okoboji Tourism | Undecided | GA91 |
| Craig Patterson | Okoboji Tourism | Undecided | GA91 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA91 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA91 |
| Emily Piper | Rathbun Regional Water Association | Undecided | GA91 |
| Logan Shine | Rathbun Regional Water Association | Undecided | GA91 |
| Doug Struyk | The Nature Conservancy | Opposing | GA91 |
| Doug Struyk | The Nature Conservancy | Undecided | GA91 |
| Emily Kavanagh | The Nature Conservancy | Opposing | GA91 |
| Emily Kavanagh | The Nature Conservancy | Undecided | GA91 |
| Jennifer Dorman | The Nature Conservancy | Opposing | GA91 |
| Jennifer Dorman | The Nature Conservancy | Undecided | GA91 |
| Jim Carney | The Nature Conservancy | Opposing | GA91 |
| Jim Carney | The Nature Conservancy | Undecided | GA91 |