| Jeff Smith | Agribusiness Association of Iowa | Undecided | GA91 |
| Maggie Smith-Fitzgerald | Agribusiness Association of Iowa | Undecided | GA91 |
| Matt Fitzgerald | Agribusiness Association of Iowa | Undecided | GA91 |
| Jennifer Breon | Food & Water Watch | Opposing | GA91 |
| Andrew Mertens | Iowa Association for Justice | Undecided | GA91 |
| Lisa Davis-Cook | Iowa Association for Justice | Undecided | GA91 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA91 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Undecided | GA91 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA91 |
| John Davis | Iowa Association of Business and Industry (ABI) | Undecided | GA91 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA91 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA91 |
| Jake Swanson | Iowa Cattlemen's Association | Supporting | GA91 |
| Kelli Wicks | Iowa Cattlemen's Association | Supporting | 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 |
| 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 |
| Todd Coffelt | Iowa Dept. of Natural Resources | 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 |
| Kevin Kuhle | Iowa Farm Bureau Federation | Supporting | GA91 |
| Matt Gronewald | Iowa Farm Bureau Federation | Supporting | GA91 |
| Matthew Steinfeldt | Iowa Farm Bureau Federation | Supporting | GA91 |
| Megan Carlson | Iowa Institute for Cooperatives | Supporting | GA91 |
| David Adelman | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA91 |
| Frank Chiodo | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA91 |
| Matt Hinch | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA91 |
| Paige Thorson | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA91 |
| Sara Allen | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA91 |
| Harrison Furlow | Iowa Pork Producers Association | Supporting | GA91 |
| Jeff Smith | Iowa Pork Producers Association | Supporting | GA91 |
| Maggie Smith-Fitzgerald | Iowa Pork Producers Association | Supporting | GA91 |
| Matt Fitzgerald | Iowa Pork Producers Association | Supporting | GA91 |
| Jacob Schrader | Iowa Propane Gas Association | Supporting | GA91 |
| Logan Murray | Iowa Propane Gas Association | Supporting | GA91 |
| Sydney Gangestad | Iowa Propane Gas Association | Supporting | GA91 |
| Colin Gorton | Iowa Renewable Fuels Association (IRF) | Supporting | GA91 |
| Colin Gorton | Iowa Renewable Fuels Association (IRF) | Undecided | GA91 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA91 |
| Jennifer Dorman | Iowa State Bar Association | Undecided | GA91 |
| Jim Carney | Iowa State Bar Association | Undecided | 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 |
| Emily Kavanagh | The Nature Conservancy | Opposing | GA91 |
| Emily Kavanagh | The Nature Conservancy | Undecided | GA91 |