| Mark Stringer | American Civil Liberties Union of Iowa (ACLU-IA) | Supporting | GA90 |
| Pete McRoberts | American Civil Liberties Union of Iowa (ACLU-IA) | Supporting | GA90 |
| Jake Highfill | American Petroleum Institute | Opposing | GA90 |
| Christopher Riley | Archer Daniels Midland Company | Opposing | GA90 |
| Tony Phillips | Black Hills Energy | Undecided | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA90 |
| Kent Hartwig | Gevo | Opposing | GA90 |
| Mark Joyce | ITC Midwest | Undecided | GA90 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Undecided | GA90 |
| Jessica Mazour | Iowa Chapter of Sierra Club | Supporting | GA90 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Supporting | GA90 |
| Matthew Covington | Iowa Citizens for Community Improvement Action Fund | Undecided | GA90 |
| Mike Heller | Iowa Renewable Fuels Association (IRF) | Opposing | GA90 |
| Sara Allen | Iowa Renewable Fuels Association (IRF) | Opposing | GA90 |
| Jamie Cashman | Iowa State Association of County Supervisors | Supporting | GA90 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA90 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Supporting | GA90 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA90 |
| Lucas Beenken | Iowa State Association of County Supervisors | Supporting | GA90 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA90 |
| William Peterson | Iowa State Association of County Supervisors | Supporting | GA90 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA90 |
| Louis Vander Streek | Iowa Utilities Commission | Undecided | GA90 |
| Maison Bleam | Iowa Utilities Commission | Undecided | GA90 |
| Chaz Allen | Iowa Utility Association | Undecided | GA90 |
| Victoria Sinclair | Land of the Free Action | Supporting | GA90 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA90 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA90 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA90 |
| Kelly Meyers | Marion County Board of Supervisors | Undecided | GA90 |
| Onnalee Gettler | MidAmerican Energy Company | Undecided | GA90 |
| Ben Gentz | Missouri River Energy Services | Undecided | GA90 |
| Kate Walton | Missouri River Energy Services | Undecided | GA90 |
| Madeleine Bradley | Missouri River Energy Services | Undecided | GA90 |
| Matt Eide | Missouri River Energy Services | Undecided | GA90 |
| Andy Conlin | POET, LLC | Opposing | GA90 |
| Dennis Tibben | POET, LLC | Opposing | GA90 |
| Kate Walton | POET, LLC | Opposing | GA90 |
| Madeleine Bradley | POET, LLC | Opposing | GA90 |
| Matt Eide | POET, LLC | Opposing | GA90 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA90 |
| Chloe Gayer | Professional Developers of Iowa (PDI) | Undecided | GA90 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA90 |
| BRITTANY LUMLEY | Summit Carbon Solutions | Opposing | GA90 |
| Courtney Craig | Summit Carbon Solutions | Opposing | GA90 |
| Elliott Meyer | Summit Carbon Solutions | Opposing | GA90 |
| Jake Ketzner | Summit Carbon Solutions | Opposing | GA90 |
| Jeffrey Boeyink | Summit Carbon Solutions | Opposing | GA90 |
| Gary Grant | Urban County Coalition | Undecided | GA90 |
| Larry Murphy | Urban County Coalition | Undecided | GA90 |
| John Strathman | VALOR Iowa | Undecided | GA90 |
| Sara Allen | Wolf Carbon Solutions | Opposing | GA90 |