| Rachel Geilenfeld | ADM | Supporting | GA91 |
| Emma Schmit | Bold Alliance | Opposing | GA91 |
| Taylor Sklenar | Climate Land Leaders | Opposing | GA91 |
| Laura Carlson | Concerned Women For America of Iowa | Opposing | GA91 |
| James Piazza, Jr. | Heavy Highway Contractors Association | Supporting | GA91 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Undecided | GA91 |
| Casey Nickel | Iowa Association of Electric Cooperatives | Undecided | GA91 |
| Dustin Miller | Iowa Association of Electric Cooperatives | Undecided | GA91 |
| Ethan Hohenadel | Iowa Association of Electric Cooperatives | Undecided | GA91 |
| Haley Moon | Iowa Association of Electric Cooperatives | Undecided | GA91 |
| Emily Piper | Iowa Biotechnology Association | Supporting | GA91 |
| Jessica Hyland | Iowa Biotechnology Association | Supporting | GA91 |
| Logan Shine | Iowa Biotechnology Association | Supporting | GA91 |
| Jake Swanson | Iowa Cattlemen's Association | Undecided | GA91 |
| Kelli Wicks | Iowa Cattlemen's Association | Undecided | 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 |
| Nick Boeyink | Iowa Conservative Energy Forum | Undecided | GA91 |
| Ian Latham | Iowa Corn Growers Association | Supporting | GA91 |
| Jeff Smith | Iowa Corn Growers Association | Supporting | GA91 |
| Maggie Smith-Fitzgerald | Iowa Corn Growers Association | Supporting | GA91 |
| Matt Fitzgerald | Iowa Corn Growers Association | Supporting | GA91 |
| Nathan Hohnstein | Iowa Corn Growers Association | Supporting | GA91 |
| Catherine Pollard | Iowa Emergency Management Association | Undecided | GA91 |
| Nick Laning | Iowa Emergency Management Association | Undecided | GA91 |
| Threase Harms | Iowa Emergency Management Association | Undecided | GA91 |
| Andy Conlin | Iowa Ethanol Producers Association | Supporting | GA91 |
| Dennis Tibben | Iowa Ethanol Producers Association | Supporting | GA91 |
| Catherine Pollard | Iowa Farmers Union | Opposing | GA91 |
| Threase Harms | Iowa Farmers Union | Opposing | GA91 |
| Colin Gorton | Iowa Renewable Fuels Association (IRF) | Supporting | GA91 |
| David Adelman | Iowa Renewable Fuels Association (IRF) | Supporting | GA91 |
| Frank Chiodo | Iowa Renewable Fuels Association (IRF) | Supporting | GA91 |
| Matt Hinch | Iowa Renewable Fuels Association (IRF) | Supporting | GA91 |
| Mike Heller | Iowa Renewable Fuels Association (IRF) | Supporting | GA91 |
| Paige Thorson | Iowa Renewable Fuels Association (IRF) | Supporting | GA91 |
| Sara Allen | Iowa Renewable Fuels Association (IRF) | Supporting | GA91 |
| Doug Struyk | Iowa Soybean Association | Undecided | GA91 |
| Jennifer Dorman | Iowa Soybean Association | Undecided | GA91 |
| Jim Carney | Iowa Soybean Association | Undecided | GA91 |
| Katie Hall | Iowa Soybean Association | Undecided | GA91 |
| Megan Decker | Iowa Soybean Association | Undecided | GA91 |
| Stephanie Weisenbach | Iowa Utilities Commission | Undecided | GA91 |
| Kurtis Bower | Kurtis Bower | Opposing | GA91 |
| Dylan Gramlich | Laborers International Union of North America | Supporting | GA91 |
| Victoria Sinclair | Land of the Free Action | Opposing | GA91 |
| Andy Conlin | POET, LLC | Supporting | GA91 |
| Clair Lewis | POET, LLC | Supporting | GA91 |
| Dennis Tibben | POET, LLC | Supporting | GA91 |
| Kate Walton | POET, LLC | Supporting | GA91 |
| Matt Eide | POET, LLC | Supporting | GA91 |
| BRITTANY LUMLEY | Summit Carbon Solutions | Undecided | GA91 |
| Courtney Craig | Summit Carbon Solutions | Undecided | GA91 |
| David Adelman | Summit Carbon Solutions | Undecided | GA91 |
| Elliott Meyer | Summit Carbon Solutions | Undecided | GA91 |
| Jake Ketzner | Summit Carbon Solutions | Undecided | GA91 |
| Jeffrey Boeyink | Summit Carbon Solutions | Undecided | GA91 |
| Doug Struyk | The Nature Conservancy | Undecided | GA91 |
| Emily Kavanagh | The Nature Conservancy | Undecided | GA91 |
| Jennifer Dorman | The Nature Conservancy | Undecided | GA91 |
| Jim Carney | The Nature Conservancy | Undecided | GA91 |
| John Strathman | VALOR Iowa | Opposing | GA91 |