| Julie Vande Hoef | Alliant Energy Corporation | Undecided | GA87 |
| Christopher Rants | Green Tech Action Fund | Withdrawn | GA87 |
| Christopher Rants | Green Tech Action Fund | Supporting | GA87 |
| John Cacciatore | Green Tech Action Fund | Supporting | GA87 |
| Dane Schumann | IBEW Iowa State Conference | Undecided | GA87 |
| Emily Hockins | IBEW Iowa State Conference | Undecided | GA87 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA87 |
| Bob Ward | Iowa Annual Conference of United Methodist Church | Undecided | GA87 |
| Brian Carter | Iowa Annual Conference of United Methodist Church | Undecided | GA87 |
| Gary Nims | Iowa Annual Conference of United Methodist Church | Undecided | GA87 |
| Rita Carter | Iowa Annual Conference of United Methodist Church | Undecided | GA87 |
| Sheila Corsbie | Iowa Annual Conference of United Methodist Church | Undecided | GA87 |
| Walden Paige | Iowa Annual Conference of United Methodist Church | Undecided | GA87 |
| William Steward | Iowa Annual Conference of United Methodist Church | Undecided | GA87 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Undecided | GA87 |
| Dustin Miller | Iowa Association of Electric Cooperatives | Undecided | GA87 |
| Paula Dierenfeld | Iowa Association of Electric Cooperatives | Undecided | GA87 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA87 |
| Jennifer Terry | Iowa Environmental Council | Supporting | GA87 |
| Kerri Johannsen | Iowa Environmental Council | Supporting | GA87 |
| Nathaniel Baer | Iowa Environmental Council | Supporting | GA87 |
| Dane Schumann | Iowa Farmers Union | Undecided | GA87 |
| Emily Hockins | Iowa Farmers Union | Undecided | GA87 |
| Threase Harms | Iowa Farmers Union | Undecided | GA87 |
| Brad Epperly | Iowa Geothermal Association | Undecided | GA87 |
| Dustin Miller | Iowa Geothermal Association | Undecided | GA87 |
| Paula Dierenfeld | Iowa Geothermal Association | Undecided | GA87 |
| Mike Heller | Iowa Renewable Fuels Association (IRF) | Undecided | GA87 |
| Paula Feltner | Iowa Renewable Fuels Association (IRF) | Undecided | GA87 |
| Alexander Cutchey | Iowa Utilities Board | Undecided | GA87 |
| Louis Vander Streek | Iowa Utilities Board | Undecided | GA87 |
| Kate Walton | Missouri River Energy Services | Undecided | GA87 |
| Matt Eide | Missouri River Energy Services | Undecided | GA87 |
| Doug Struyk | The Nature Conservancy | Undecided | GA87 |
| Jennifer Dorman | The Nature Conservancy | Undecided | GA87 |
| Jim Carney | The Nature Conservancy | Undecided | GA87 |