| Kate Walton | City of Bettendorf | Undecided | GA91 |
| Madeleine Bradley | City of Bettendorf | Undecided | GA91 |
| Matt Eide | City of Bettendorf | Undecided | GA91 |
| Gary Grant | City of Cedar Rapids | Opposing | GA91 |
| Gary Grant | City of Cedar Rapids | Withdrawn | GA91 |
| Gary Grant | City of Cedar Rapids | Undecided | GA91 |
| Larry Murphy | City of Cedar Rapids | Opposing | GA91 |
| Larry Murphy | City of Cedar Rapids | Withdrawn | GA91 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA91 |
| Clara Wulfsen | City of Des Moines | Opposing | GA91 |
| Doug Struyk | City of Des Moines | Opposing | GA91 |
| Emilee Harris-Puricelli | City of Des Moines | Opposing | GA91 |
| Jen Schulte | City of Des Moines | Opposing | GA91 |
| Jennifer Dorman | City of Des Moines | Opposing | GA91 |
| Jim Carney | City of Des Moines | Opposing | GA91 |
| Kenzie Geiger | City of Des Moines | Opposing | GA91 |
| Brad Epperly | City of Marion | Undecided | GA91 |
| Casey Nickel | City of Marion | Undecided | GA91 |
| Dustin Miller | City of Marion | Undecided | GA91 |
| Clara Wulfsen | City of Waukee | Undecided | GA91 |
| Doug Struyk | City of Waukee | Undecided | GA91 |
| Jennifer Dorman | City of Waukee | Undecided | GA91 |
| Jim Carney | City of Waukee | Undecided | GA91 |
| Jacob Schrader | City of West Des Moines | Undecided | GA91 |
| Logan Murray | City of West Des Moines | Undecided | GA91 |
| Sydney Gangestad | City of West Des Moines | Undecided | GA91 |
| Nick Laning | Des Moines Metropolitan Wastewater Reclamation Authority | Opposing | GA91 |
| Noah Hackbart | Des Moines Metropolitan Wastewater Reclamation Authority | Opposing | GA91 |
| Kate Walton | Grow Clinton County | Undecided | GA91 |
| Madeleine Bradley | Grow Clinton County | Undecided | GA91 |
| Matt Eide | Grow Clinton County | 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 | Opposing | GA91 |
| Marc Beltrame | Iowa Association of Municipal Utilities | Opposing | GA91 |
| Kelsey Schott | Iowa Association of Water Agencies | Opposing | GA91 |
| RG Schwarm | Iowa Association of Water Agencies | Opposing | GA91 |
| Todd Coffelt | Iowa Dept. of Natural Resources | Undecided | GA91 |
| Chelsea Hoye | Iowa League of Cities | Opposing | GA91 |
| Cody Carlson | Iowa League of Cities | Opposing | GA91 |
| Andy Conlin | Iowa Manufactured Housing Association | Supporting | GA91 |
| Dennis Tibben | Iowa Manufactured Housing Association | Supporting | GA91 |
| Emily Piper | Iowa Rural Water Association | Opposing | GA91 |
| Logan Shine | Iowa Rural Water Association | Opposing | GA91 |
| Kate Walton | Iowa Section American Water Works Association | Opposing | GA91 |
| Madeleine Bradley | Iowa Section American Water Works Association | Opposing | GA91 |
| Matt Eide | Iowa Section American Water Works Association | Opposing | GA91 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA91 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA91 |
| Ben Gentz | Missouri River Energy Services | Undecided | GA91 |
| Kate Walton | Missouri River Energy Services | Undecided | GA91 |
| Madeleine Bradley | Missouri River Energy Services | Undecided | GA91 |
| Matt Eide | Missouri River Energy Services | Undecided | GA91 |
| Emily Piper | Piper Sandler | Opposing | GA91 |
| Logan Shine | Piper Sandler | Opposing | GA91 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA91 |
| Chloe Gayer | Professional Developers of Iowa (PDI) | Undecided | GA91 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA91 |
| Gary Grant | Urban County Coalition | Undecided | GA91 |
| Larry Murphy | Urban County Coalition | Undecided | GA91 |