| Gary Grant | City of Cedar Rapids | Undecided | GA86 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA86 |
| Meghan Malloy | City of Cedar Rapids | Undecided | GA86 |
| Jake Oeth | Des Moines Water Works | Opposing | GA86 |
| Kent Hartwig | Des Moines Water Works | Opposing | GA86 |
| Threase Harms | Des Moines Water Works | Opposing | GA86 |
| James Piazza, Jr. | Heavy Highway Contractors Association | Undecided | GA86 |
| Jay Iverson | Home Builders Association of Iowa | Undecided | GA86 |
| Jay Iverson | Home Builders Association of Iowa | Supporting | GA86 |
| James Piazza, Jr. | International Union of Operating Engineers-Local 234 | Undecided | GA86 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Rachel Geilenfeld | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Zach Dalluge | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Jessica Hyland | Iowa Association of Municipal Utilities | Supporting | GA86 |
| Julie Smith | Iowa Association of Municipal Utilities | Supporting | GA86 |
| Troy DeJoode | Iowa Association of Municipal Utilities | Supporting | GA86 |
| Neila Seaman | Iowa Chapter of Sierra Club | Opposing | GA86 |
| Sharon Tahtinen | Iowa Dept. of Natural Resources | Undecided | GA86 |
| Doug Struyk | Iowa Drainage District Association | Undecided | GA86 |
| George Appleby | Iowa Drainage District Association | Undecided | GA86 |
| Jennifer Tyler | Iowa Drainage District Association | Undecided | GA86 |
| Jim Carney | Iowa Drainage District Association | Undecided | GA86 |
| Jim Obradovich | Iowa Environmental Council | Opposing | GA86 |
| Dustin Miller | Iowa League of Cities | Supporting | GA86 |
| Robert Palmer | Iowa League of Cities | Supporting | GA86 |
| Emily Piper | Iowa Rural Water Association | Supporting | GA86 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA86 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA86 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA86 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA86 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA86 |
| Jim Obradovich | Utility Management Organizations of Iowa | Undecided | GA86 |