| Ted Stopulos | Alliant Energy Corporation | Undecided | GA91 |
| Becca Eastwood | American Civil Liberties Union of Iowa (ACLU-IA) | Supporting | GA91 |
| Mark Stringer | American Civil Liberties Union of Iowa (ACLU-IA) | Supporting | GA91 |
| Pete McRoberts | American Civil Liberties Union of Iowa (ACLU-IA) | Supporting | GA91 |
| Jake Highfill | American Petroleum Institute | Opposing | GA91 |
| Tony Phillips | American Petroleum Institute | Opposing | GA91 |
| Christopher Riley | Archer Daniels Midland Company | Opposing | GA91 |
| Steven Lukan | Black Hills Energy | Undecided | GA91 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA91 |
| Sandra Conlin | Clean Grid Alliance | Undecided | GA91 |
| Taylor Sklenar | Climate Land Leaders | Supporting | GA91 |
| Kent Hartwig | Gevo | Opposing | GA91 |
| James Piazza, Jr. | Heavy Highway Contractors Association | Opposing | 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 |
| Elliott Gebel | 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 |
| Jake Swanson | Iowa Cattlemen's Association | Undecided | GA91 |
| Kelli Wicks | Iowa Cattlemen's Association | Undecided | GA91 |
| Briana Kouma | Iowa Chapter of Sierra Club | Supporting | GA91 |
| Jessica Mazour | Iowa Chapter of Sierra Club | Supporting | GA91 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Supporting | GA91 |
| Emily Callison | Iowa Corn Growers Association | Opposing | GA91 |
| Jeff Smith | Iowa Corn Growers Association | Opposing | GA91 |
| Kevin Studer | Iowa Corn Growers Association | Opposing | GA91 |
| Maggie Smith-Fitzgerald | Iowa Corn Growers Association | Opposing | GA91 |
| Matt Fitzgerald | Iowa Corn Growers Association | Opposing | GA91 |
| David Adelman | Iowa Renewable Fuels Association (IRF) | Opposing | GA91 |
| Frank Chiodo | Iowa Renewable Fuels Association (IRF) | Opposing | GA91 |
| Matt Hinch | Iowa Renewable Fuels Association (IRF) | Opposing | GA91 |
| Mike Heller | Iowa Renewable Fuels Association (IRF) | Opposing | GA91 |
| Nathan Hohnstein | Iowa Renewable Fuels Association (IRF) | Opposing | GA91 |
| Paige Thorson | Iowa Renewable Fuels Association (IRF) | Opposing | GA91 |
| Sara Allen | Iowa Renewable Fuels Association (IRF) | Opposing | 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 |
| Stephanie Weisenbach | Iowa Utilities Commission | Undecided | GA91 |
| Chaz Allen | Iowa Utility Association | Undecided | GA91 |
| Dylan Gramlich | Laborers International Union of North America | Opposing | GA91 |
| Jefferson Fink | Land of the Free Action | Supporting | GA91 |
| Victoria Sinclair | Land of the Free Action | Supporting | GA91 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA91 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA91 |
| Dane Schumann | Mid-American Carpenters Regional Council | Undecided | GA91 |
| Onnalee Gettler | MidAmerican Energy Company | Undecided | GA91 |
| Andy Conlin | POET, LLC | Opposing | GA91 |
| Dennis Tibben | POET, LLC | Opposing | GA91 |
| Kate Walton | POET, LLC | Opposing | GA91 |
| Madeleine Bradley | POET, LLC | Opposing | GA91 |
| Matt Eide | POET, LLC | Opposing | GA91 |
| Michael Triplett | Ranger Power | Undecided | GA91 |
| BRITTANY LUMLEY | Summit Carbon Solutions | Opposing | GA91 |
| Courtney Craig | Summit Carbon Solutions | Opposing | GA91 |
| Elliott Meyer | Summit Carbon Solutions | Opposing | GA91 |
| Jake Ketzner | Summit Carbon Solutions | Opposing | GA91 |
| Jeffrey Boeyink | Summit Carbon Solutions | Opposing | GA91 |
| Gary Grant | Urban County Coalition | Undecided | GA91 |
| Larry Murphy | Urban County Coalition | Undecided | GA91 |
| John Strathman | VALOR Iowa | Supporting | GA91 |