| Melissa Speed | AFSCME Iowa Council 61 | Opposing | GA90 |
| Mark Stringer | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | GA90 |
| Pete McRoberts | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | GA90 |
| Mike St. Clair | American Property Casualty Insurance Association (APCIA) | Undecided | GA90 |
| Wendy Abrahamson | Episcopal Diocese of Iowa | Opposing | GA90 |
| Sydney Gangestad | Everytown for Gun Safety Action Fund | Opposing | GA90 |
| Connie Ryan | Interfaith Alliance of Iowa Action Fund | Opposing | GA90 |
| Andrea Dencklau | Iowa ACEs 360 | Opposing | GA90 |
| Lisa Cushatt | Iowa ACEs 360 | Opposing | GA90 |
| MaryNelle Trefz | Iowa ACEs 360 | Opposing | GA90 |
| Andrew Mertens | Iowa Association for Justice | Undecided | GA90 |
| Lisa Davis-Cook | Iowa Association for Justice | Undecided | GA90 |
| Emily Shields | Iowa Association of Community College Trustees | Undecided | GA90 |
| Jeff Smith | Iowa Association of Community College Trustees | Undecided | GA90 |
| Katrina Holck | Iowa Association of Community College Trustees | Undecided | GA90 |
| Maggie Smith-Fitzgerald | Iowa Association of Community College Trustees | Undecided | GA90 |
| Matt Fitzgerald | Iowa Association of Community College Trustees | Undecided | GA90 |
| David Adelman | Iowa Association of Independent Colleges and Universities | Undecided | GA90 |
| Frank Chiodo | Iowa Association of Independent Colleges and Universities | Undecided | GA90 |
| Matt Hinch | Iowa Association of Independent Colleges and Universities | Undecided | GA90 |
| Paige Thorson | Iowa Association of Independent Colleges and Universities | Undecided | GA90 |
| Sara Allen | Iowa Association of Independent Colleges and Universities | Undecided | GA90 |
| Emily Piper | Iowa Association of School Boards | Undecided | GA90 |
| Michelle Johnson | Iowa Association of School Boards | Undecided | GA90 |
| Carolann Jensen | Iowa Board of Regents | Undecided | GA90 |
| Jennifer Harbison | Iowa Board of Regents | Undecided | GA90 |
| Jillian Carlson | Iowa Board of Regents | Undecided | GA90 |
| Keith Saunders | Iowa Board of Regents | Undecided | GA90 |
| Larry Murphy | Iowa Catholic Conference | Undecided | GA90 |
| Tom Chapman | Iowa Catholic Conference | Undecided | GA90 |
| James Kersten | Iowa Central Community College | Undecided | GA90 |
| Kelly Meyers | Iowa County Attorneys Association | Undecided | GA90 |
| Tom Ferguson | Iowa County Attorneys Association | Undecided | GA90 |
| Josie Wagler | Iowa Dept. of Public Safety | Undecided | GA90 |
| Richard Rogers | Iowa Firearms Coalition, Inc. | Supporting | GA90 |
| BRITTANY LUMLEY | Iowa Insurance Institute | Undecided | GA90 |
| Courtney Craig | Iowa Insurance Institute | Undecided | GA90 |
| Elliott Meyer | Iowa Insurance Institute | Undecided | GA90 |
| Jeffrey Boeyink | Iowa Insurance Institute | Undecided | GA90 |
| Kellie Paschke | Iowa Peace Officers Association | Undecided | GA90 |
| Kelly Meyers | Iowa Peace Officers Association | Undecided | GA90 |
| Larry Murphy | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Undecided | GA90 |
| Melissa Peterson | Iowa State Education Association | Opposing | GA90 |
| Morgan Miller | Iowa State Education Association | Opposing | GA90 |
| Jake Highfill | Iowa State Sheriffs' & Deputies' Association | Undecided | GA90 |
| Tony Phillips | Iowa State Sheriffs' & Deputies' Association | Undecided | GA90 |
| Trey Jackson | March For Our Lives Iowa | Opposing | GA90 |
| Nicholas Buggia | National Rifle Association of America | Supporting | GA90 |
| Nicholas Buggia | National Rifle Association of America | Withdrawn | GA90 |
| Nicholas Buggia | National Rifle Association of America | Undecided | 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 |
| Nathaniel Arnold | Professional Educators of Iowa | Undecided | GA90 |
| Dave Daughton | Rural School Advocates of Iowa | Undecided | GA90 |
| Margaret Buckton | Rural School Advocates of Iowa | Undecided | GA90 |
| Dave Daughton | School Administrators of Iowa | Undecided | GA90 |
| Margaret Buckton | Urban Education Network of Iowa | Opposing | GA90 |