| Julie Vande Hoef | Alliant Energy Corporation | Undecided | GA89 |
| Ted Stopulos | Alliant Energy Corporation | Undecided | GA89 |
| David Scott | American Council of Engineering Companies | Undecided | GA89 |
| Drew Klein | Americans For Prosperity | Undecided | GA89 |
| Tyler Raygor | Americans For Prosperity | Undecided | GA89 |
| Christopher Rants | Center for Rural Affairs | Supporting | GA89 |
| Cody Smith | Center for Rural Affairs | Supporting | GA89 |
| John Cacciatore | Center for Rural Affairs | Supporting | GA89 |
| Johnathan Hladik | Center for Rural Affairs | Supporting | GA89 |
| MaryNelle Trefz | Common Good Iowa | Supporting | GA89 |
| Mike Owen | Common Good Iowa | Supporting | GA89 |
| Natalie Veldhouse | Common Good Iowa | Supporting | GA89 |
| Sheila Hansen | Common Good Iowa | Supporting | GA89 |
| Clara Wulfsen | Department of Revenue | Undecided | GA89 |
| Josh Mandelbaum | Environmental Law and Policy Center | Supporting | GA89 |
| Steve Falck | Environmental Law and Policy Center | Supporting | GA89 |
| Marcus Haack | Episcopal Diocese of Iowa | Supporting | GA89 |
| Wendy Abrahamson | Episcopal Diocese of Iowa | Supporting | GA89 |
| Teresa Bomhoff | IA Mental Health Planning Council | Supporting | GA89 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Undecided | GA89 |
| Dustin Miller | Iowa Association of Electric Cooperatives | Undecided | GA89 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Undecided | GA89 |
| Alex Cutchey | Iowa Association of Municipal Utilities | Undecided | GA89 |
| Brad Epperly | Iowa Association of Municipal Utilities | Undecided | GA89 |
| Dustin Miller | Iowa Association of Municipal Utilities | Undecided | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Supporting | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA89 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Undecided | GA89 |
| Brian Carter | Iowa Conference of United Methodist Church | Supporting | GA89 |
| Gary Nims | Iowa Conference of United Methodist Church | Supporting | GA89 |
| Rita Carter | Iowa Conference of United Methodist Church | Supporting | GA89 |
| Roberta Paige | Iowa Conference of United Methodist Church | Supporting | GA89 |
| Jake Ketzner | Iowa Conservative Energy Forum | Supporting | GA89 |
| Deanna Triplett | Iowa Economic Development Authority | Undecided | GA89 |
| Jordan Oster | Iowa Environmental Council | Supporting | GA89 |
| Kerri Johannsen | Iowa Environmental Council | Supporting | GA89 |
| Michael Schmidt | Iowa Environmental Council | Supporting | GA89 |
| Irene DeMaris | Iowa Interfaith Power & Light | Supporting | GA89 |
| Jill Altringer | Iowa Poultry Association | Undecided | GA89 |
| Sydney Gangestad | Iowa Propane Gas Association | Undecided | GA89 |
| Tim Coonan | Iowa Propane Gas Association | Undecided | GA89 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA89 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA89 |
| Christopher Rants | Iowa Solar Energy Trade Association | Supporting | GA89 |
| John Cacciatore | Iowa Solar Energy Trade Association | Supporting | GA89 |
| Jill Altringer | Iowa State Dairy Association | Undecided | GA89 |
| Tom Sands | Iowa Taxpayers Association | Undecided | GA89 |
| Jill Altringer | Iowa Turkey Federation | Undecided | GA89 |
| Maison Bleam | Iowa Utilities Board | Undecided | GA89 |
| David Scott | Iowa Water Well Association | Undecided | GA89 |
| Onnalee Gettler | MidAmerican Energy Company | Undecided | GA89 |
| Kate Walton | Missouri River Energy Services | Undecided | GA89 |
| Kersten Johnson | Missouri River Energy Services | Undecided | GA89 |
| Matt Eide | Missouri River Energy Services | Undecided | GA89 |
| Doug Struyk | The Nature Conservancy | Supporting | GA89 |
| Doug Struyk | The Nature Conservancy | Undecided | GA89 |
| Jennifer Dorman | The Nature Conservancy | Supporting | GA89 |
| Jennifer Dorman | The Nature Conservancy | Undecided | GA89 |
| Jim Carney | The Nature Conservancy | Supporting | GA89 |
| Jim Carney | The Nature Conservancy | Undecided | GA89 |
| Jim Obradovich | Trusted Energy | Supporting | GA89 |
| Robert Mulqueen | Trusted Energy | Supporting | GA89 |