| Julie Vande Hoef | Alliant Energy Corporation | Undecided | GA88 |
| David Scott | American Petroleum Institute | Undecided | GA88 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Dustin Miller | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Katie Graham | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Paula Dierenfeld | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Brad Epperly | Iowa Association of Municipal Utilities | Undecided | GA88 |
| Dustin Miller | Iowa Association of Municipal Utilities | Undecided | GA88 |
| Katie Graham | Iowa Association of Municipal Utilities | Undecided | GA88 |
| Paula Dierenfeld | Iowa Association of Municipal Utilities | Undecided | GA88 |
| Timothy Whipple | Iowa Association of Municipal Utilities | Undecided | GA88 |
| Brad Epperly | Iowa Automobile Dealers Association | Undecided | GA88 |
| Dustin Miller | Iowa Automobile Dealers Association | Undecided | GA88 |
| Katie Graham | Iowa Automobile Dealers Association | Undecided | GA88 |
| Paula Dierenfeld | Iowa Automobile Dealers Association | Undecided | GA88 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Supporting | GA88 |
| Brian Carter | Iowa Conference of United Methodist Church | Supporting | GA88 |
| Carolyn Uhlenhake-Walker | Iowa Conference of United Methodist Church | Supporting | GA88 |
| Gary Nims | Iowa Conference of United Methodist Church | Supporting | GA88 |
| Rita Carter | Iowa Conference of United Methodist Church | Supporting | GA88 |
| Robert Mulqueen | Iowa Conference of United Methodist Church | Supporting | GA88 |
| Roberta Paige | Iowa Conference of United Methodist Church | Supporting | GA88 |
| Jennifer Terry | Iowa Environmental Council | Supporting | GA88 |
| Jordan Oster | Iowa Environmental Council | Supporting | GA88 |
| Kerri Johannsen | Iowa Environmental Council | Supporting | GA88 |
| Michael Schmidt | Iowa Environmental Council | Supporting | GA88 |
| David Scott | Iowa Good Roads Association | Undecided | GA88 |
| David Scott | Iowa Motor Truck Association | Undecided | GA88 |
| Jake Ketzner | KWIK Trip, Inc. | Undecided | GA88 |
| Larry Blixt | KWIK Trip, Inc. | Undecided | GA88 |
| Onnalee Gettler | MidAmerican Energy Company | Undecided | GA88 |