| Kellie Paschke | Enterprise Holdings d/b/a Enterprise Mobility | Undecided | GA90 |
| Kelly Meyers | Enterprise Holdings d/b/a Enterprise Mobility | Undecided | GA90 |
| Troy Skinner | Enterprise Holdings d/b/a Enterprise Mobility | Undecided | GA90 |
| Brad Epperly | Iowa Automobile Dealers Association | Supporting | GA90 |
| Dustin Miller | Iowa Automobile Dealers Association | Supporting | GA90 |
| Susan Fenton | Iowa Dept. of Transportation | Undecided | 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 |
| Gary Grant | Linn County Board of Supervisors | Supporting | GA90 |
| Gary Grant | Linn County Board of Supervisors | Withdrawn | GA90 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA90 |
| Larry Murphy | Linn County Board of Supervisors | Supporting | GA90 |
| Larry Murphy | Linn County Board of Supervisors | Withdrawn | GA90 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA90 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA90 |
| Kelly Meyers | Marion County Board of Supervisors | Undecided | GA90 |
| Troy Skinner | Marion County Board of Supervisors | Undecided | GA90 |
| Gary Grant | Urban County Coalition | Supporting | GA90 |
| Gary Grant | Urban County Coalition | Withdrawn | GA90 |
| Gary Grant | Urban County Coalition | Undecided | GA90 |
| Larry Murphy | Urban County Coalition | Supporting | GA90 |
| Larry Murphy | Urban County Coalition | Withdrawn | GA90 |
| Larry Murphy | Urban County Coalition | Undecided | GA90 |