| Melissa Speed | AFSCME Iowa Council 61 | Supporting | GA90 |
| Melissa Speed | AFSCME Iowa Council 61 | Withdrawn | GA90 |
| Melissa Speed | AFSCME Iowa Council 61 | Opposing | GA90 |
| Brad Epperly | BNSF Railway Co. | Undecided | GA90 |
| Dustin Miller | BNSF Railway Co. | Undecided | GA90 |
| Brad Epperly | Bayer U.S. LLC | Undecided | GA90 |
| Dustin Miller | Bayer U.S. LLC | Undecided | GA90 |
| Chaney Yeast | Blank Childrens Hospital | Supporting | GA90 |
| Kelli Soyer | Common Good Iowa | Supporting | GA90 |
| Mike Owen | Common Good Iowa | Supporting | GA90 |
| Natalie Veldhouse | Common Good Iowa | Supporting | GA90 |
| Sheila Hansen | Common Good Iowa | Supporting | GA90 |
| Wendy Abrahamson | Episcopal Diocese of Iowa | Supporting | GA90 |
| Chelsea Hoye | EveryStep | Supporting | GA90 |
| Nick Laning | EveryStep | Supporting | GA90 |
| Threase Harms | EveryStep | Supporting | GA90 |
| Patrick Purtill | Faith & Freedom Coalition | Supporting | GA90 |
| Brad Epperly | Helena Agri-Enterprises, LLC | Undecided | GA90 |
| Dustin Miller | Helena Agri-Enterprises, LLC | Undecided | GA90 |
| Teresa Bomhoff | IA Mental Health Planning Council | Supporting | GA90 |
| Nick Laning | IBEW Iowa State Conference | Supporting | GA90 |
| Threase Harms | IBEW Iowa State Conference | Supporting | GA90 |
| Lisa Cushatt | Iowa ACEs 360 | Supporting | GA90 |
| MaryNelle Trefz | Iowa ACEs 360 | Supporting | GA90 |
| Brad Lint | Iowa Association for Justice | Supporting | GA90 |
| Lisa Davis-Cook | Iowa Association for Justice | Supporting | GA90 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Undecided | GA90 |
| John Davis | Iowa Association of Business and Industry (ABI) | Undecided | GA90 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA90 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA90 |
| Brad Epperly | Iowa Automobile Dealers Association | Undecided | GA90 |
| Dustin Miller | Iowa Automobile Dealers Association | Undecided | GA90 |
| Carolann Jensen | Iowa Board of Regents | Undecided | GA90 |
| Jennifer Harbison | Iowa Board of Regents | Undecided | GA90 |
| Keith Saunders | Iowa Board of Regents | Undecided | GA90 |
| Mary Braun | Iowa Board of Regents | Undecided | GA90 |
| Larry Murphy | Iowa Catholic Conference | Supporting | GA90 |
| Tom Chapman | Iowa Catholic Conference | Supporting | GA90 |
| Laura Hessburg | Iowa Coalition Against Domestic Violence | Supporting | GA90 |
| Brad Epperly | Iowa Collectors Association, Inc. | Undecided | GA90 |
| Dustin Miller | Iowa Collectors Association, Inc. | Undecided | GA90 |
| Carrie Malone | Iowa Department of Health and Human Services | Undecided | GA90 |
| Dax Oberreuter | Iowa Department of Health and Human Services | Undecided | GA90 |
| Jancy Nielson | Iowa Department of Health and Human Services | Undecided | GA90 |
| Jeff Pitts | Iowa Faith and Freedom Coalition | Supporting | GA90 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Supporting | GA90 |
| Brad Epperly | Iowa Grocery Industry Association | Undecided | GA90 |
| Dustin Miller | Iowa Grocery Industry Association | Undecided | GA90 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA90 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA90 |
| Michael Gronstal | Iowa State Building and Construction Trades | Supporting | GA90 |
| Dylan Gramlich | Laborers International Union of North America | Supporting | GA90 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Undecided | GA90 |
| Dane Schumann | North Central States Regional Council of Carpenters | Supporting | GA90 |
| Dane Schumann | North Central States Regional Council of Carpenters | Undecided | GA90 |
| Felicia Hilton | North Central States Regional Council of Carpenters | Supporting | GA90 |
| Greg Bellville | Prevent Child Abuse Iowa | Supporting | GA90 |
| Kylie Spies | Prevent Child Abuse Iowa | Supporting | GA90 |
| Chuck Hurley | The Family Leader | Supporting | GA90 |
| Danny Carroll | The Family Leader | Supporting | GA90 |
| Rebekah Oleson | The Family Leader | Supporting | GA90 |
| Ryan Benn | The Family Leader | Supporting | GA90 |
| Chuck Hurley | The Family Leader Foundation | Supporting | GA90 |
| Danny Carroll | The Family Leader Foundation | Supporting | GA90 |
| Denise Bubeck | The Family Leader Foundation | Supporting | GA90 |
| Greg Baker | The Family Leader Foundation | Supporting | GA90 |
| Rebekah Oleson | The Family Leader Foundation | Supporting | GA90 |
| Ryan Benn | The Family Leader Foundation | Supporting | GA90 |
| Karl Schilling | United Professionals/UE | Supporting | GA90 |