| Tyler Raygor | Americans For Prosperity | Supporting | GA90 |
| Brad Epperly | BNSF Railway Co. | Undecided | GA90 |
| Casey Nickel | BNSF Railway Co. | Undecided | GA90 |
| Dustin Miller | BNSF Railway Co. | Undecided | GA90 |
| Brad Epperly | Bayer U.S. LLC | Undecided | GA90 |
| Casey Nickel | Bayer U.S. LLC | Undecided | GA90 |
| Dustin Miller | Bayer U.S. LLC | Undecided | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA90 |
| Anne Discher | Common Good Iowa | Opposing | GA90 |
| Mike Owen | Common Good Iowa | Opposing | GA90 |
| Sean Finn | Common Good Iowa | Opposing | GA90 |
| Sheila Hansen | Common Good Iowa | Opposing | GA90 |
| Brad Epperly | Helena Agri-Enterprises, LLC | Undecided | GA90 |
| Casey Nickel | Helena Agri-Enterprises, LLC | Undecided | GA90 |
| Dustin Miller | Helena Agri-Enterprises, LLC | Undecided | GA90 |
| Nick Laning | IBEW Iowa State Conference | Opposing | GA90 |
| Threase Harms | IBEW Iowa State Conference | Opposing | 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 |
| Brad Epperly | Iowa Automobile Dealers Association | Undecided | GA90 |
| Casey Nickel | Iowa Automobile Dealers Association | Undecided | GA90 |
| Dustin Miller | Iowa Automobile Dealers Association | Undecided | GA90 |
| Brad Epperly | Iowa Collectors Association, Inc. | Undecided | GA90 |
| Casey Nickel | Iowa Collectors Association, Inc. | Undecided | GA90 |
| Dustin Miller | Iowa Collectors Association, Inc. | Undecided | GA90 |
| Sara Throener | Iowa Department of Inspections, Appeals, and Licensing | Undecided | GA90 |
| Brad Epperly | Iowa Grocery Industry Association | Undecided | GA90 |
| Casey Nickel | Iowa Grocery Industry Association | Undecided | GA90 |
| Dustin Miller | Iowa Grocery Industry Association | Undecided | GA90 |
| Kate Walton | Iowa Head Start Association | Undecided | GA90 |
| Madeleine Bradley | Iowa Head Start Association | Undecided | GA90 |
| Matt Eide | Iowa Head Start Association | Undecided | GA90 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA90 |
| Casey Nickel | Iowa Society of Certified Public Accountants | Undecided | GA90 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA90 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA90 |
| Andy Conlin | Opportunity Solutions Project | Supporting | GA90 |
| Dennis Tibben | Opportunity Solutions Project | Supporting | GA90 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Opposing | GA90 |
| Nathaniel Arnold | Professional Educators of Iowa | Undecided | GA90 |