| MARK MAXWELL | ABATE of Iowa | Opposing | GA89 |
| Katie Hall | American Property Casualty Insurance Association (APCIA) | Undecided | GA89 |
| Mike St. Clair | American Property Casualty Insurance Association (APCIA) | Undecided | GA89 |
| Gary Grant | City of Cedar Rapids | Undecided | GA89 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA89 |
| Meghan Malloy | City of Cedar Rapids | Undecided | GA89 |
| Hannah McDowell | Grow Clinton County | Undecided | GA89 |
| Nick Laning | Grow Clinton County | Undecided | GA89 |
| Threase Harms | Grow Clinton County | Undecided | GA89 |
| Lyle Brehm | Iowa County Engineers Association | Undecided | GA89 |
| MARK MAXWELL | Iowa Motorcycle Dealers Association | Opposing | GA89 |
| David Adelman | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA89 |
| Frank Chiodo | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA89 |
| Matt Hinch | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA89 |
| Sara Allen | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA89 |
| Dan Kleen | Iowa Off -Highway Vehicle Association | Opposing | GA89 |
| Jamie Cashman | Iowa State Association of Counties | Opposing | GA89 |
| Kristi Harshbarger | Iowa State Association of Counties | Opposing | GA89 |
| Lucas Beenken | Iowa State Association of Counties | Opposing | GA89 |
| William Peterson | Iowa State Association of Counties | Opposing | GA89 |
| Jamie Cashman | Iowa State Association of County Supervisors | Opposing | GA89 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Opposing | GA89 |
| Lucas Beenken | Iowa State Association of County Supervisors | Opposing | GA89 |
| William Peterson | Iowa State Association of County Supervisors | Opposing | GA89 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA89 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA89 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA89 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA89 |
| Kelly Meyers | Marion County Board of Supervisors | Undecided | GA89 |
| Logan Murray | Marion County Board of Supervisors | Undecided | GA89 |
| Troy Skinner | Marion County Board of Supervisors | Undecided | GA89 |
| Katie Hall | Mutual Insurance Association of Iowa | Undecided | GA89 |
| Mike St. Clair | Mutual Insurance Association of Iowa | Undecided | GA89 |
| Gary Grant | Urban County Coalition | Undecided | GA89 |
| Larry Murphy | Urban County Coalition | Undecided | GA89 |
| Meghan Malloy | Urban County Coalition | Undecided | GA89 |