| 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 |
| Tony Phillips | Black Hills Energy | Undecided | GA91 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA91 |
| Dr. Tanja Garrison | Dr. Tanja Garrison | Supporting | GA91 |
| Jessica Mazour | Iowa Chapter of Sierra Club | Supporting | GA91 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Supporting | GA91 |
| Katie Biechler | Iowa Citizens for Community Improvement Action Fund | Supporting | GA91 |
| Noah Hackbart | Iowa Farmers Union | Supporting | GA91 |
| Threase Harms | Iowa Farmers Union | Supporting | GA91 |
| Nathan Hohnstein | 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 | Opposing | GA91 |
| Chaz Allen | Iowa Utility Association | Undecided | GA91 |
| Jefferson Fink | Land of the Free Action | Supporting | GA91 |
| Jim Obradovich | 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 |
| Ben Gentz | Missouri River Energy Services | Undecided | GA91 |
| Kate Walton | Missouri River Energy Services | Undecided | GA91 |
| Madeleine Bradley | Missouri River Energy Services | Undecided | GA91 |
| Matt Eide | Missouri River Energy Services | Undecided | GA91 |
| Gary Grant | Urban County Coalition | Undecided | GA91 |
| Larry Murphy | Urban County Coalition | Undecided | GA91 |
| John Strathman | VALOR Iowa | Supporting | GA91 |