| Paige Yontz | AARP Iowa | Supporting | GA90 |
| David Adelman | American Chemistry Council | Supporting | GA90 |
| Frank Chiodo | American Chemistry Council | Supporting | GA90 |
| Matt Hinch | American Chemistry Council | Supporting | GA90 |
| Paige Thorson | American Chemistry Council | Supporting | GA90 |
| Sara Allen | American Chemistry Council | Supporting | GA90 |
| Tom Cope | American Planning Association Iowa Chapter | Opposing | GA90 |
| Tyler Raygor | Americans For Prosperity | Supporting | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA90 |
| Kate Walton | City of Bettendorf | Undecided | GA90 |
| Madeleine Bradley | City of Bettendorf | Undecided | GA90 |
| Matt Eide | City of Bettendorf | 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 |
| Tom Cope | City of Coralville | Undecided | GA90 |
| Doug Struyk | City of Waukee | Undecided | GA90 |
| Jennifer Dorman | City of Waukee | Undecided | GA90 |
| Jim Carney | City of Waukee | Undecided | GA90 |
| Rachel Ong | Greater Des Moines Habitat for Humanity | Supporting | GA90 |
| Angela Caulk | Greater Iowa Apartment Association | Supporting | GA90 |
| Christian Frankl | Greater Iowa Apartment Association | Supporting | GA90 |
| Logan Murray | Greater Iowa Apartment Association | Supporting | GA90 |
| Noah Tabor | Greater Iowa Apartment Association | Supporting | GA90 |
| Eric Goranson | Habitat for Humanity of Iowa | Supporting | GA90 |
| Jake Highfill | Home Builders Association of Iowa | Supporting | GA90 |
| Jay Iverson | Home Builders Association of Iowa | Supporting | GA90 |
| Tony Phillips | Home Builders Association of Iowa | Supporting | GA90 |
| Nick Laning | IBEW Iowa State Conference | Undecided | GA90 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA90 |
| Jefferson Fink | Iowa Association of Building Officials | Undecided | GA90 |
| Jim Obradovich | Iowa Association of Building Officials | Undecided | GA90 |
| Victoria Sinclair | Iowa Association of Building Officials | Undecided | GA90 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Greta Haas | Iowa Association of Realtors | Supporting | GA90 |
| Jennifer Kingland | Iowa Association of Realtors | Supporting | GA90 |
| Mike Rozenboom | Iowa Bankers Association | Supporting | GA90 |
| Sharon Presnall | Iowa Bankers Association | Supporting | GA90 |
| Mike Rozenboom | Iowa Bankers Mortgage Corp. | Supporting | GA90 |
| Sharon Presnall | Iowa Bankers Mortgage Corp. | Supporting | GA90 |
| Angela Caulk | Iowa Chapter, American Institute of Architects | Undecided | GA90 |
| Christian Frankl | Iowa Chapter, American Institute of Architects | Undecided | GA90 |
| Logan Murray | Iowa Chapter, American Institute of Architects | Undecided | GA90 |
| Noah Tabor | Iowa Chapter, American Institute of Architects | Undecided | GA90 |
| Kelly Meyers | Iowa County Attorneys Association | Undecided | GA90 |
| Tom Ferguson | Iowa County Attorneys Association | Undecided | GA90 |
| Justin Hupfer | Iowa Credit Union League | Undecided | GA90 |
| Madison Grady | Iowa Credit Union League | Undecided | GA90 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Opposing | GA90 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Undecided | GA90 |
| Nichole Hansen | Iowa Finance Authority | Undecided | GA90 |
| Tom Cope | Iowa Housing Trust Funds Advocates Network | Withdrawn | GA90 |
| Tom Cope | Iowa Housing Trust Funds Advocates Network | Supporting | 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 |
| Mike Rozenboom | Iowa Mortgage Association | Undecided | GA90 |
| Sharon Presnall | Iowa Mortgage Association | Undecided | GA90 |
| Angela Caulk | Landlords of Iowa | Supporting | GA90 |
| Christian Frankl | 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 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA90 |
| Kelly Meyers | Marion County Board of Supervisors | Undecided | GA90 |
| Christopher Rants | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA90 |
| Justin Hupfer | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA90 |
| David Adelman | Metropolitan Coalition | Undecided | GA90 |
| Frank Chiodo | Metropolitan Coalition | Undecided | GA90 |
| Matt Hinch | Metropolitan Coalition | Undecided | GA90 |
| Paige Thorson | Metropolitan Coalition | Undecided | GA90 |
| Sara Allen | Metropolitan Coalition | Undecided | GA90 |
| Christopher Rants | NECA - Iowa (NEC) | Undecided | GA90 |
| Justin Hupfer | NECA - Iowa (NEC) | Undecided | GA90 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA90 |
| Dane Schumann | North Central States Regional Council of Carpenters | Undecided | GA90 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA90 |
| Chloe Gayer | Professional Developers of Iowa (PDI) | Undecided | GA90 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA90 |
| Brad Epperly | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Casey Nickel | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Dustin Miller | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Ryan Sempf | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Gabrielle Deliz | The Brick Industry Association | Opposing | GA90 |
| Patrick Burns | The Brick Industry Association | Opposing | GA90 |
| Dave Stone | United Way of Central Iowa | Supporting | GA90 |
| Gary Grant | Urban County Coalition | Undecided | GA90 |
| Larry Murphy | Urban County Coalition | Undecided | GA90 |
| Emily Piper | Vinyl Siding Institute | Supporting | GA90 |
| Logan Shine | Vinyl Siding Institute | Supporting | GA90 |