| Matt Hinch | American Chemistry Council | Opposing | GA90 |
| Jon Murphy | American Planning Association Iowa Chapter | Undecided | GA90 |
| Tom Cope | American Planning Association Iowa Chapter | Undecided | GA90 |
| Drew Klein | Americans For Prosperity | Supporting | GA90 |
| Tyler Raygor | Americans For Prosperity | Supporting | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA90 |
| Jon Murphy | City of Cedar Falls | Undecided | GA90 |
| Tom Cope | City of Cedar Falls | Undecided | GA90 |
| Gary Grant | City of Cedar Rapids | Undecided | GA90 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA90 |
| Jon Murphy | City of Coralville | Undecided | GA90 |
| Tom Cope | City of Coralville | Undecided | GA90 |
| Doug Struyk | City of Des Moines | Undecided | GA90 |
| Emilee Harris-Puricelli | City of Des Moines | Undecided | GA90 |
| Jen Schulte | City of Des Moines | Undecided | GA90 |
| Jennifer Dorman | City of Des Moines | Undecided | GA90 |
| Jim Carney | City of Des Moines | Undecided | GA90 |
| RG Schwarm | Conlin Properties | Supporting | GA90 |
| Ryan Sempf | Dubuque Area Chamber of Commerce | Supporting | GA90 |
| Josh Mandelbaum | Environmental Law and Policy Center | Opposing | GA90 |
| Steve Falck | Environmental Law and Policy Center | Opposing | GA90 |
| Angela Caulk | Greater Iowa Apartment Association | Supporting | GA90 |
| Kole Pederson | Greater Iowa Apartment Association | Supporting | GA90 |
| Logan Murray | Greater Iowa Apartment Association | Supporting | GA90 |
| Noah Tabor | Greater Iowa Apartment Association | Supporting | GA90 |
| Jake Highfill | Home Builders Association of Iowa | Supporting | GA90 |
| Jay Iverson | Home Builders Association of Iowa | Supporting | GA90 |
| Jefferson Fink | Iowa Association of Building Officials | Undecided | GA90 |
| Jim Obradovich | Iowa Association of Building Officials | Undecided | GA90 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Undecided | GA90 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| John Davis | Iowa Association of Business and Industry (ABI) | Undecided | GA90 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA90 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA90 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Undecided | GA90 |
| Greta Haas | Iowa Association of Realtors | Supporting | GA90 |
| Jennifer Kingland | Iowa Association of Realtors | Supporting | GA90 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA90 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA90 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Undecided | GA90 |
| Dustin Miller | Iowa Chapter, American Institute of Architects | Undecided | GA90 |
| Chelsea Hoye | Iowa Environmental Council | Opposing | GA90 |
| Threase Harms | Iowa Environmental Council | Opposing | GA90 |
| Irene DeMaris | Iowa Interfaith Power & Light | Opposing | GA90 |
| Alan Kemp | Iowa League of Cities | Undecided | GA90 |
| Daniel Stalder | Iowa League of Cities | Undecided | GA90 |
| Robert Palmer | Iowa League of Cities | Undecided | GA90 |
| Andy Conlin | Iowa Manufactured Housing Association | Supporting | GA90 |
| Angela Caulk | Landlords of Iowa | Supporting | GA90 |
| Kole Pederson | Landlords of Iowa | Supporting | GA90 |
| Logan Murray | Landlords of Iowa | Supporting | GA90 |
| Noah Tabor | Landlords of Iowa | Supporting | GA90 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA90 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA90 |
| Onnalee Gettler | MidAmerican Energy Company | Undecided | GA90 |
| Kate Walton | Missouri River Energy Services | Undecided | GA90 |
| Madeleine Bradley | Missouri River Energy Services | Undecided | GA90 |
| Matt Eide | Missouri River Energy Services | Undecided | GA90 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA90 |
| Courtney Reyes | One Iowa | Opposing | GA90 |
| Keenan Crow | One Iowa | Opposing | GA90 |
| Courtney Reyes | One Iowa Action | Opposing | GA90 |
| Keenan Crow | One Iowa Action | Opposing | GA90 |
| Tom Cope | Personal Interest-Tom Cope | Undecided | GA90 |
| Gary Grant | Urban County Coalition | Undecided | GA90 |
| Larry Murphy | Urban County Coalition | Undecided | GA90 |