| Gary Grant | City of Cedar Rapids | Undecided | GA90 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA90 |
| Kelly Meyers | Iowa County Attorneys Association | Undecided | GA90 |
| Tom Ferguson | Iowa County Attorneys Association | Undecided | GA90 |
| Mike Heller | Iowa State Association of Assessors | Undecided | GA90 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA90 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA90 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA90 |
| William Peterson | Iowa State Association of Counties | Undecided | GA90 |
| Jamie Cashman | Iowa State Association of County Supervisors | Supporting | GA90 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Supporting | GA90 |
| Lucas Beenken | Iowa State Association of County Supervisors | Supporting | GA90 |
| William Peterson | Iowa State Association of County Supervisors | Supporting | GA90 |
| Gary Grant | Linn County Board of Supervisors | Withdrawn | GA90 |
| Gary Grant | Linn County Board of Supervisors | Supporting | 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| Larry Murphy | Linn County Board of Supervisors | Withdrawn | GA90 |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 |
| Gary Grant | Urban County Coalition | Undecided | GA90 |
| Larry Murphy | Urban County Coalition | Undecided | GA90 |