| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Supporting | GA88 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA88 |
| Cohl Bultje | Iowa Ethics and Campaign Disclosure Board | Undecided | GA88 |
| Megan Tooker | Iowa Ethics and Campaign Disclosure Board | Undecided | GA88 |
| Heidi Burhans | Iowa Secretary of State | Undecided | GA88 |
| Jamie Cashman | Iowa State Association of Counties | Opposing | GA88 |
| Kristi Harshbarger | Iowa State Association of Counties | Opposing | GA88 |
| Lucas Beenken | Iowa State Association of Counties | Opposing | GA88 |
| William Peterson | Iowa State Association of Counties | Opposing | GA88 |
| Jamie Cashman | Iowa State Association of County Auditors | Opposing | GA88 |
| Kristi Harshbarger | Iowa State Association of County Auditors | Opposing | GA88 |
| Lucas Beenken | Iowa State Association of County Auditors | Opposing | GA88 |
| William Peterson | Iowa State Association of County Auditors | Opposing | GA88 |
| Jamie Cashman | Iowa State Association of County Supervisors | Opposing | GA88 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Opposing | GA88 |
| Lucas Beenken | Iowa State Association of County Supervisors | Opposing | GA88 |
| William Peterson | Iowa State Association of County Supervisors | Opposing | GA88 |
| Amy Campbell | League of Women Voters of Iowa | Undecided | GA88 |
| Craig Patterson | League of Women Voters of Iowa | Undecided | GA88 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA88 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA88 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA88 |
| Gary Grant | Urban County Coalition | Undecided | GA88 |
| Larry Murphy | Urban County Coalition | Undecided | GA88 |
| Meghan Malloy | Urban County Coalition | Undecided | GA88 |