| Jim Obradovich | Conservation Districts of Iowa | Undecided | GA88 |
| Pete McRoberts | Conservation Districts of Iowa | Undecided | GA88 |
| Robert Mulqueen | Conservation Districts of Iowa | Undecided | GA88 |
| Maddie Wilcox | Grow Clinton County | Undecided | GA88 |
| Threase Harms | Grow Clinton County | Undecided | GA88 |
| Amy Campbell | Iowa Association of County Conservation Boards | Undecided | GA88 |
| Craig Patterson | Iowa Association of County Conservation Boards | Undecided | GA88 |
| Angela Davis | Iowa Environmental Council | Supporting | GA88 |
| Angela Davis | Iowa Environmental Council | Undecided | GA88 |
| Alan Kemp | Iowa League of Cities | Supporting | GA88 |
| Daniel Stalder | Iowa League of Cities | Supporting | GA88 |
| Robert Palmer | Iowa League of Cities | Supporting | GA88 |
| Amy Campbell | Iowa Natural Heritage Foundation | Undecided | GA88 |
| Craig Patterson | Iowa Natural Heritage Foundation | Undecided | GA88 |
| Jim Obradovich | Iowa Society of Solid Waste Operations (ISOSWO) | Undecided | GA88 |
| Pete McRoberts | Iowa Society of Solid Waste Operations (ISOSWO) | Undecided | GA88 |
| Robert Mulqueen | Iowa Society of Solid Waste Operations (ISOSWO) | Undecided | GA88 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA88 |
| Jamie Cashman | Iowa State Association of Counties | Supporting | GA88 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA88 |
| Kristi Harshbarger | Iowa State Association of Counties | Supporting | GA88 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA88 |
| Lucas Beenken | Iowa State Association of Counties | Supporting | GA88 |
| William Peterson | Iowa State Association of Counties | Undecided | GA88 |
| William Peterson | Iowa State Association of Counties | Supporting | GA88 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA88 |
| Jamie Cashman | Iowa State Association of County Supervisors | Supporting | GA88 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA88 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Supporting | GA88 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA88 |
| Lucas Beenken | Iowa State Association of County Supervisors | Supporting | GA88 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA88 |
| William Peterson | Iowa State Association of County Supervisors | Supporting | GA88 |
| Jarret Heil | Iowa State County Treasurers Association | Opposing | GA88 |
| Amy Campbell | Loess Hills Alliance | Undecided | GA88 |
| Craig Patterson | Loess Hills Alliance | Undecided | GA88 |
| Amy Campbell | Travel Federation of Iowa | Undecided | GA88 |
| Craig Patterson | Travel Federation of Iowa | Undecided | GA88 |