| Julie Vande Hoef | Alliant Energy Corporation | Supporting | GA89 |
| Ted Stopulos | Alliant Energy Corporation | Supporting | GA89 |
| Drew Klein | Americans For Prosperity | Supporting | GA89 |
| Tyler Raygor | Americans For Prosperity | Supporting | GA89 |
| Tony Phillips | Black Hills Energy | Supporting | GA89 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA89 |
| Joseph Buffington | County Planning and Zoning Officials of Iowa | Opposing | GA89 |
| Josh Mandelbaum | Environmental Law and Policy Center | Opposing | GA89 |
| Steve Falck | Environmental Law and Policy Center | Opposing | GA89 |
| Marc Beltrame | FUELIowa (PMCI) | Supporting | GA89 |
| Hannah McDowell | Grow Clinton County | Undecided | GA89 |
| Nick Laning | Grow Clinton County | Undecided | GA89 |
| Threase Harms | Grow Clinton County | Undecided | GA89 |
| Jay Iverson | Home Builders Association of Iowa | Supporting | GA89 |
| Mark Joyce | ITC Midwest | Supporting | GA89 |
| Jim Obradovich | Iowa Association of Building Officials | Undecided | GA89 |
| Robert Mulqueen | Iowa Association of Building Officials | Undecided | GA89 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Supporting | GA89 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Undecided | GA89 |
| Dustin Miller | Iowa Association of Electric Cooperatives | Supporting | GA89 |
| Dustin Miller | Iowa Association of Electric Cooperatives | Undecided | GA89 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Supporting | GA89 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Undecided | GA89 |
| Alex Cutchey | Iowa Association of Municipal Utilities | Undecided | GA89 |
| Alex Cutchey | Iowa Association of Municipal Utilities | Supporting | GA89 |
| Brad Epperly | Iowa Association of Municipal Utilities | Undecided | GA89 |
| Brad Epperly | Iowa Association of Municipal Utilities | Supporting | GA89 |
| Dustin Miller | Iowa Association of Municipal Utilities | Undecided | GA89 |
| Dustin Miller | Iowa Association of Municipal Utilities | Supporting | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA89 |
| Kelly Meyers | Iowa County Attorneys Association | Undecided | GA89 |
| Angela Davis | Iowa Environmental Council | Opposing | GA89 |
| Angela Davis | Iowa Environmental Council | Undecided | GA89 |
| Jordan Oster | Iowa Environmental Council | Opposing | GA89 |
| Kerri Johannsen | Iowa Environmental Council | Opposing | GA89 |
| Michael Schmidt | Iowa Environmental Council | Opposing | GA89 |
| Bobby Martens | Iowa Institute for Cooperatives | Supporting | GA89 |
| Katie Hall | Iowa Institute for Cooperatives | Supporting | GA89 |
| Mike St. Clair | Iowa Institute for Cooperatives | Supporting | GA89 |
| Alan Kemp | Iowa League of Cities | Opposing | GA89 |
| Daniel Stalder | Iowa League of Cities | Opposing | GA89 |
| Robert Palmer | Iowa League of Cities | Opposing | GA89 |
| Sydney Gangestad | Iowa Propane Gas Association | Supporting | GA89 |
| Tim Coonan | Iowa Propane Gas Association | Supporting | GA89 |
| Jamie Cashman | Iowa State Association of Counties | Opposing | GA89 |
| Kristi Harshbarger | Iowa State Association of Counties | Opposing | GA89 |
| Lucas Beenken | Iowa State Association of Counties | Opposing | GA89 |
| William Peterson | Iowa State Association of Counties | Opposing | GA89 |
| Jamie Cashman | Iowa State Association of County Supervisors | Opposing | GA89 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Opposing | GA89 |
| Lucas Beenken | Iowa State Association of County Supervisors | Opposing | GA89 |
| William Peterson | Iowa State Association of County Supervisors | Opposing | GA89 |
| Maison Bleam | Iowa Utilities Board | Undecided | GA89 |
| Chaz Allen | Iowa Utility Association | Supporting | GA89 |
| Michael Gronstal | Iowa Utility Association | Supporting | GA89 |
| David Adelman | Metropolitan Coalition | Undecided | GA89 |
| Frank Chiodo | Metropolitan Coalition | Undecided | GA89 |
| Matt Hinch | Metropolitan Coalition | Undecided | GA89 |
| Sara Allen | Metropolitan Coalition | Undecided | GA89 |
| Onnalee Gettler | MidAmerican Energy Company | Supporting | 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 |
| Jeff Cook | Office of Consumer Advocate | Undecided | GA89 |