| Brad Epperly | Iowa Automobile Dealers Association | Supporting | GA90 |
| Bruce Anderson | Iowa Automobile Dealers Association | Supporting | GA90 |
| Dustin Miller | Iowa Automobile Dealers Association | Supporting | GA90 |
| Jefferson Fink | Iowa Automobile Recyclers Association | Undecided | GA90 |
| Jim Obradovich | Iowa Automobile Recyclers Association | Undecided | GA90 |
| Susan Fenton | Iowa Dept. of Transportation | Supporting | GA90 |
| James Piazza, Jr. | Iowa Independent Automobile Dealers Association | Supporting | GA90 |
| Jamie Cashman | Iowa State Association of Counties | Supporting | GA90 |
| Kristi Harshbarger | Iowa State Association of Counties | Supporting | GA90 |
| Lucas Beenken | Iowa State Association of Counties | Supporting | GA90 |
| William Peterson | Iowa State Association of Counties | Supporting | GA90 |
| Doug Struyk | Iowa State Bar Association | Supporting | GA90 |
| Jennifer Dorman | Iowa State Bar Association | Supporting | GA90 |
| Jim Carney | Iowa State Bar Association | Supporting | GA90 |
| Kris Rowley | Iowa State County Treasurers Association | Supporting | GA90 |
| Mike Rozenboom | Iowa Trust Association | Supporting | GA90 |
| Sharon Presnall | Iowa Trust Association | Supporting | GA90 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA90 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA90 |
| Sydney Gangestad | The Iowa Academy of Trust and Estate Counsel | Supporting | GA90 |
| Tim Coonan | The Iowa Academy of Trust and Estate Counsel | Supporting | GA90 |
| Gary Grant | Urban County Coalition | Undecided | GA90 |
| Larry Murphy | Urban County Coalition | Undecided | GA90 |