| Amy Campbell | AARP Iowa | Opposing | GA90 |
| Chloe Gayer | AARP Iowa | Opposing | GA90 |
| Craig Patterson | AARP Iowa | Opposing | GA90 |
| Paige Yontz | AARP Iowa | 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 |
| Angela Caulk | Better Ballot Iowa | Opposing | GA90 |
| Christian Frankl | Better Ballot Iowa | Opposing | GA90 |
| Noah Tabor | Better Ballot Iowa | Opposing | GA90 |
| Jeff Smith | Broadlawns Medical Center | Supporting | GA90 |
| Maggie Smith-Fitzgerald | Broadlawns Medical Center | Supporting | GA90 |
| Matt Fitzgerald | Broadlawns Medical Center | Supporting | GA90 |
| Catherine Johnson | Disability Rights Iowa | Opposing | GA90 |
| Amy Campbell | Iowa Association of Area Agencies on Aging | Opposing | GA90 |
| Chloe Gayer | Iowa Association of Area Agencies on Aging | Opposing | GA90 |
| Craig Patterson | Iowa Association of Area Agencies on Aging | Opposing | GA90 |
| Robert Cook | Iowa Atheists and Freethinkers | Opposing | GA90 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA90 |
| Kelly Meyers | Iowa County Attorneys Association | Undecided | GA90 |
| Tom Ferguson | Iowa County Attorneys Association | Undecided | GA90 |
| Jeff Pitts | Iowa Faith and Freedom Coalition | Supporting | GA90 |
| Robert Ussery | Iowa Minuteman Civil Defense Corps | Supporting | GA90 |
| Jamie Cashman | Iowa State Association of County Auditors | Opposing | GA90 |
| Kristi Harshbarger | Iowa State Association of County Auditors | Opposing | GA90 |
| Lucas Beenken | Iowa State Association of County Auditors | Opposing | GA90 |
| William Peterson | Iowa State Association of County Auditors | Opposing | GA90 |
| Amy Campbell | League of Women Voters of Iowa | Opposing | GA90 |
| Chloe Gayer | 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 |
| Amy Campbell | Polk County - Board of Supervisors | Opposing | GA90 |
| Craig Patterson | Polk County - Board of Supervisors | Opposing | GA90 |
| Gary Grant | Urban County Coalition | Undecided | GA90 |
| Larry Murphy | Urban County Coalition | Undecided | GA90 |
| John Strathman | VALOR Iowa | Supporting | GA90 |