| Jake Highfill | American Petroleum Institute | Undecided | GA90 |
| Tony Phillips | American Petroleum Institute | Undecided | GA90 |
| Doug Struyk | City of Iowa City | Undecided | GA90 |
| Jennifer Dorman | City of Iowa City | Undecided | GA90 |
| Jim Carney | City of Iowa City | Undecided | GA90 |
| Doug Struyk | City of Waukee | Undecided | GA90 |
| Jennifer Dorman | City of Waukee | Undecided | GA90 |
| Jim Carney | City of Waukee | Undecided | GA90 |
| Josh Mandelbaum | Environmental Law and Policy Center | Supporting | GA90 |
| Steve Falck | Environmental Law and Policy Center | Supporting | GA90 |
| Cyndi Pederson | Iowa Association of Professional Fire Chiefs | Undecided | GA90 |
| Elizabeth Crimmings | Iowa Association of Professional Fire Chiefs | Undecided | GA90 |
| John Pederson | Iowa Association of Professional Fire Chiefs | Undecided | GA90 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Supporting | GA90 |
| Kelly Meyers | Iowa County Attorneys Association | Undecided | GA90 |
| Tom Ferguson | Iowa County Attorneys Association | Undecided | GA90 |
| Chelsea Hoye | Iowa Environmental Council | Undecided | GA90 |
| Lindsey Herazy | Iowa Environmental Council | Undecided | GA90 |
| Threase Harms | Iowa Environmental Council | Undecided | GA90 |
| Elizabeth Crimmings | Iowa Firefighters Association (IFA) | Undecided | GA90 |
| Alan Kemp | Iowa League of Cities | Supporting | GA90 |
| Daniel Stalder | Iowa League of Cities | Supporting | GA90 |
| Robert Palmer | Iowa League of Cities | Supporting | GA90 |
| Larry Murphy | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Undecided | GA90 |
| Christopher Rants | Iowa Professional Fire Fighters | Supporting | GA90 |
| John Cacciatore | Iowa Professional Fire Fighters | Supporting | GA90 |
| Lon Anderson | Iowa Professional Fire Fighters | Supporting | GA90 |