| Ted Stopulos | Alliant Energy Corporation | Undecided | GA89 |
| Brad Epperly | American Clean Power Association | Undecided | GA89 |
| Dustin Miller | American Clean Power Association | Undecided | GA89 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA89 |
| Andy Conlin | Invenergy | Supporting | GA89 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Undecided | GA89 |
| John Davis | Iowa Association of Business and Industry (ABI) | Undecided | GA89 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA89 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA89 |
| Steffi Lee | Iowa Association of Business and Industry (ABI) | Undecided | GA89 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Supporting | GA89 |
| Alex Cutchey | Iowa Association of Municipal Utilities | Supporting | GA89 |
| Emily Piper | Iowa Association of School Boards | Supporting | GA89 |
| Michelle Johnson | Iowa Association of School Boards | Supporting | GA89 |
| Phil Jeneary | Iowa Association of School Boards | Supporting | GA89 |
| Bob Rafferty | Iowa Business for Clean Energy | Undecided | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA89 |
| Chelsea Hoye | Iowa Environmental Council | Undecided | GA89 |
| Emilee Harris-Puricelli | Iowa Environmental Council | Undecided | GA89 |
| Threase Harms | Iowa Environmental Council | Undecided | GA89 |
| Alan Kemp | Iowa League of Cities | Undecided | GA89 |
| Daniel Stalder | Iowa League of Cities | Undecided | GA89 |
| Robert Palmer | Iowa League of Cities | Undecided | GA89 |
| Jim Henter | Iowa Retail Federation | Supporting | GA89 |
| Mike Heller | Iowa State Association of Assessors | Supporting | GA89 |
| Mike Heller | Iowa State Association of Assessors | Undecided | GA89 |
| Jamie Cashman | Iowa State Association of Counties | Supporting | GA89 |
| Kristi Harshbarger | Iowa State Association of Counties | Supporting | GA89 |
| Lucas Beenken | Iowa State Association of Counties | Supporting | GA89 |
| William Peterson | Iowa State Association of Counties | Supporting | GA89 |
| Jamie Cashman | Iowa State Association of County Supervisors | Supporting | GA89 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Supporting | GA89 |
| Lucas Beenken | Iowa State Association of County Supervisors | Supporting | GA89 |
| William Peterson | Iowa State Association of County Supervisors | Supporting | GA89 |
| Tom Sands | Iowa Taxpayers Association | Undecided | GA89 |
| Geri Huser | Iowa Utilities Board | Undecided | GA89 |
| Maison Bleam | Iowa Utilities Board | Undecided | GA89 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA89 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA89 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA89 |
| David Adelman | MidAmerican Energy Company | Supporting | GA89 |
| Frank Chiodo | MidAmerican Energy Company | Supporting | GA89 |
| Lillie Brady | MidAmerican Energy Company | Supporting | GA89 |
| Matt Hinch | MidAmerican Energy Company | Supporting | GA89 |
| Onnalee Gettler | MidAmerican Energy Company | Supporting | GA89 |
| Sara Allen | MidAmerican Energy Company | Supporting | GA89 |
| Kate Walton | Missouri River Energy Services | Undecided | GA89 |
| Madeleine Bradley | Missouri River Energy Services | Undecided | GA89 |
| Matt Eide | Missouri River Energy Services | Undecided | GA89 |
| Brian Johnson | NextEra Energy | Opposing | GA89 |
| Christopher Rants | NextEra Energy | Opposing | GA89 |
| John Cacciatore | NextEra Energy | Opposing | GA89 |
| Justin Hupfer | NextEra Energy | Opposing | GA89 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA89 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA89 |
| Dave Daughton | Rural School Advocates of Iowa | Supporting | GA89 |
| Margaret Buckton | Rural School Advocates of Iowa | Supporting | GA89 |
| Gary Grant | Urban County Coalition | Undecided | GA89 |
| Larry Murphy | Urban County Coalition | Undecided | GA89 |
| Meghan Malloy | Urban County Coalition | Undecided | GA89 |
| Margaret Buckton | Urban Education Network of Iowa | Supporting | GA89 |