| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA91 |
| Gary Grant | City of Cedar Rapids | Undecided | GA91 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA91 |
| Brad Epperly | City of Marion | Undecided | GA91 |
| Casey Nickel | City of Marion | Undecided | GA91 |
| Dustin Miller | City of Marion | Undecided | GA91 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Undecided | GA91 |
| John Davis | Iowa Association of Business and Industry (ABI) | Undecided | GA91 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA91 |
| David Peck | Iowa Association of Municipal Utilities | Undecided | GA91 |
| Marc Beltrame | Iowa Association of Municipal Utilities | Undecided | GA91 |
| Todd Coffelt | Iowa Dept. of Natural Resources | Undecided | GA91 |
| Deanna Triplett | Iowa Economic Development Authority | Undecided | GA91 |
| Chelsea Hoye | Iowa League of Cities | Undecided | GA91 |
| Cody Carlson | Iowa League of Cities | Undecided | GA91 |
| Matt McKinney | Iowa League of Cities | Undecided | GA91 |
| RG Schwarm | Iowa League of Cities | Undecided | GA91 |
| Matt McKinney | Iowa Recycling Association | Opposing | GA91 |
| RG Schwarm | Iowa Recycling Association | Opposing | GA91 |
| Jefferson Fink | Iowa Society of Solid Waste Operations (ISOSWO) | Opposing | GA91 |
| Jim Obradovich | Iowa Society of Solid Waste Operations (ISOSWO) | Opposing | GA91 |
| Victoria Sinclair | Iowa Society of Solid Waste Operations (ISOSWO) | Opposing | GA91 |
| Andrea Woodard | Iowa State Association of Counties | Undecided | GA91 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA91 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA91 |
| Andrea Woodard | Iowa State Association of County Auditors | Undecided | GA91 |
| Jamie Cashman | Iowa State Association of County Auditors | Undecided | GA91 |
| Lucas Beenken | Iowa State Association of County Auditors | Undecided | GA91 |
| Andrea Woodard | Iowa State Association of County Supervisors | Undecided | GA91 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA91 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA91 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA91 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA91 |
| Nick Laning | Metro Waste Authority | Opposing | GA91 |
| Noah Hackbart | Metro Waste Authority | Opposing | GA91 |
| Threase Harms | Metro Waste Authority | Opposing | GA91 |
| Gary Grant | Urban County Coalition | Undecided | GA91 |
| Larry Murphy | Urban County Coalition | Undecided | GA91 |
| Mike Heller | Waste Management, Inc. | Undecided | GA91 |