| 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 |
| Rita Bettis Austen | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | GA90 |
| Chelsea Hoye | American Massage Therapy Association (AMTA) | Opposing | GA90 |
| Nick Laning | American Massage Therapy Association (AMTA) | Opposing | GA90 |
| Threase Harms | American Massage Therapy Association (AMTA) | Opposing | GA90 |
| Gary Grant | City of Cedar Rapids | Undecided | GA90 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA90 |
| Kelli Soyer | Common Good Iowa | Opposing | GA90 |
| Mike Owen | Common Good Iowa | Opposing | GA90 |
| Natalie Veldhouse | Common Good Iowa | Opposing | GA90 |
| Sheila Hansen | Common Good Iowa | Opposing | GA90 |
| Joseph Buffington | County Planning and Zoning Officials of Iowa | Undecided | GA90 |
| Josh Mandelbaum | Environmental Law and Policy Center | Opposing | GA90 |
| Steve Falck | Environmental Law and Policy Center | Opposing | GA90 |
| Wendy Abrahamson | Episcopal Diocese of Iowa | Opposing | GA90 |
| Teresa Bomhoff | IA Mental Health Planning Council | Opposing | GA90 |
| Connie Ryan | Interfaith Alliance of Iowa Action Fund | Opposing | GA90 |
| John Hirl | Iowa Association of Municipal Utilities | Undecided | GA90 |
| Marc Beltrame | Iowa Association of Municipal Utilities | Undecided | GA90 |
| Robert Cook | Iowa Atheists and Freethinkers | Opposing | 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 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA90 |
| Laura Hessburg | Iowa Coalition Against Domestic Violence | Opposing | GA90 |
| Maddie Wilcox | Iowa Department of Health and Human Services | Undecided | GA90 |
| Chelsea Hoye | Iowa Environmental Council | Opposing | GA90 |
| Threase Harms | Iowa Environmental Council | Opposing | GA90 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Opposing | GA90 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA90 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA90 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA90 |
| William Peterson | Iowa State Association of Counties | Undecided | GA90 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA90 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA90 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA90 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA90 |
| Melissa Peterson | Iowa State Education Association | Opposing | GA90 |
| Morgan Miller | Iowa State Education Association | Opposing | GA90 |
| Amy Campbell | League of Women Voters of Iowa | Opposing | GA90 |
| Craig Patterson | League of Women Voters of Iowa | Opposing | GA90 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA90 |
| Larry Murphy | Linn County Board of Supervisors | 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 |
| 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 |
| Rebekah Oleson | The Family Leader Foundation | Supporting | GA90 |
| Ryan Benn | The Family Leader Foundation | Supporting | GA90 |
| Gary Grant | Urban County Coalition | Undecided | GA90 |
| Larry Murphy | Urban County Coalition | Undecided | GA90 |
| Margaret Buckton | Urban Education Network of Iowa | Undecided | GA90 |
| R. Bruce Beeston | Veterans National Recovery Center | Undecided | GA90 |
| R. Bruce Beeston | Vietnam Veterans of America, Inc., State Council | Undecided | GA90 |