| Robert Weiser | 3M Government Affairs | Undecided | GA86 |
| Sarah Reckling | 3M Government Affairs | Undecided | GA86 |
| Jake Oeth | Des Moines Water Works | Undecided | GA86 |
| Kent Hartwig | Des Moines Water Works | Undecided | GA86 |
| Threase Harms | Des Moines Water Works | Undecided | GA86 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA86 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA86 |
| Rachel Geilenfeld | Iowa Association of Business and Industry (ABI) | Supporting | GA86 |
| Zach Dalluge | Iowa Association of Business and Industry (ABI) | Supporting | GA86 |
| Linda Kinman | Iowa Association of Water Agencies | Undecided | GA86 |
| Eric Tabor | Iowa Attorney General Dept. of Justice | Undecided | GA86 |
| Neila Seaman | Iowa Chapter of Sierra Club | Opposing | GA86 |
| Brad Epperly | Iowa Defense Counsel Association | Undecided | GA86 |
| Paula Dierenfeld | Iowa Defense Counsel Association | Undecided | GA86 |
| Scott Sundstrom | Iowa Defense Counsel Association | Undecided | GA86 |
| Deborah Thompson | Iowa Dept. of Public Health | Undecided | GA86 |
| Robert Mulqueen | Iowa Environmental Council | Undecided | GA86 |
| Brad Epperly | Iowa Grocery Industry Association | Undecided | GA86 |
| Paula Dierenfeld | Iowa Grocery Industry Association | Undecided | GA86 |
| Scott Sundstrom | Iowa Grocery Industry Association | Undecided | GA86 |
| Jim Henter | Iowa Retail Federation | Undecided | GA86 |
| Emily Piper | Iowa Rural Water Association | Undecided | GA86 |
| Brice Oakley | Iowa Water Quality Association | Undecided | GA86 |
| Don Avenson | Iowa Water Quality Association | Undecided | GA86 |
| Tom Cope | Iowa Water Quality Association | Undecided | GA86 |