| 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 |
| Brad Epperly | Ames Regional Economic Alliance | Opposing | GA90 |
| Dustin Miller | Ames Regional Economic Alliance | Opposing | GA90 |
| Barbra Solberg | Cedar Rapids Metro Economic Alliance | Opposing | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Opposing | GA90 |
| Mike Owen | Common Good Iowa | Opposing | GA90 |
| Natalie Veldhouse | Common Good Iowa | Opposing | GA90 |
| Sean Finn | Common Good Iowa | Opposing | GA90 |
| Sheila Hansen | Common Good Iowa | Opposing | GA90 |
| Wendy Abrahamson | Episcopal Diocese of Iowa | Opposing | GA90 |
| Andrea Woodard | Greater Des Moines Partnership | Opposing | GA90 |
| Brad Epperly | Greater Des Moines Partnership | Opposing | GA90 |
| Dustin Miller | Greater Des Moines Partnership | Opposing | GA90 |
| Steve Firman | Grow Cedar Valley | Opposing | GA90 |
| Connie Ryan | Interfaith Alliance of Iowa Action Fund | Opposing | GA90 |
| Robert Cook | Iowa Atheists and Freethinkers | Opposing | GA90 |
| Carolann Jensen | Iowa Board of Regents | Opposing | GA90 |
| Jennifer Harbison | Iowa Board of Regents | Opposing | GA90 |
| Keith Saunders | Iowa Board of Regents | Opposing | GA90 |
| Mary Braun | Iowa Board of Regents | Opposing | GA90 |
| Joe Murphy | Iowa Business Council | Opposing | GA90 |
| Barbra Solberg | Iowa City Area Business Partnership | Opposing | GA90 |
| Laura Hessburg | Iowa Coalition Against Domestic Violence | Opposing | GA90 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Opposing | GA90 |
| Becky Tayler | Iowa Safe Schools | Opposing | GA90 |
| Damian Thompson | Iowa Safe Schools | Opposing | 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 |
| Betty Andrews | NAACP, National Association for the Advancement of Colored People, Iowa-Nebraska | Opposing | GA90 |
| David Walker | NAACP, National Association for the Advancement of Colored People, Iowa-Nebraska | Opposing | GA90 |
| Russell Lovell | NAACP, National Association for the Advancement of Colored People, Iowa-Nebraska | Opposing | GA90 |
| Andy Conlin | Opportunity Solutions Project | Supporting | GA90 |
| Frederick Haskins | Patterson Law Firm LLP | Undecided | GA90 |
| Nathaniel Arnold | Professional Educators of Iowa | Undecided | GA90 |
| Anita Fischer | Protect My Innocence | Supporting | GA90 |
| Cheryl Elsloo | Protect My Innocence | Supporting | GA90 |
| Harry Ehrlich | Protect My Innocence | Supporting | GA90 |
| John Butler | Protect My Innocence | Supporting | GA90 |
| Katherine Bogaards | Protect My Innocence | Supporting | GA90 |
| Rick Phillips | Protect My Innocence | 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 |
| Rebekah Oleson | The Family Leader Foundation | Supporting | GA90 |
| Ryan Benn | The Family Leader Foundation | Supporting | GA90 |