| Drew Klein | Americans For Prosperity | Supporting | GA90 |
| Tyler Raygor | Americans For Prosperity | Supporting | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | 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 |
| 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 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Undecided | GA90 |
| Michael Gronstal | Iowa State Building and Construction Trades | Undecided | GA90 |
| Jon Murphy | Koch Government Affairs, LLC and Affiliates | Supporting | GA90 |
| Tom Cope | Koch Government Affairs, LLC and Affiliates | Supporting | GA90 |
| Christopher Rants | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA90 |
| Justin Hupfer | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA90 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Undecided | GA90 |
| David Adelman | Sheet Metal Contractors of Iowa | Undecided | GA90 |
| Frank Chiodo | Sheet Metal Contractors of Iowa | Undecided | GA90 |
| Lillie Brady | Sheet Metal Contractors of Iowa | Undecided | GA90 |
| Matt Hinch | Sheet Metal Contractors of Iowa | Undecided | GA90 |
| Sara Allen | Sheet Metal Contractors of Iowa | Undecided | GA90 |