| Taylor Sklenar | Climate Land Leaders | Opposing | GA91 |
| Arthur Roche | Dubuque Area Land and Water Legacy | Opposing | GA91 |
| Arthur Roche | Dubuque Area Land and Water Legacy | Undecided | GA91 |
| Marty Corfman | Dubuque Audubon Society | Opposing | GA91 |
| Larry Murphy | Iowa Catholic Conference | Undecided | GA91 |
| Tom Chapman | Iowa Catholic Conference | Undecided | GA91 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA91 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA91 |
| Todd Coffelt | Iowa Dept. of Natural Resources | Undecided | GA91 |
| Cody Smith | Iowa Environmental Council | Undecided | GA91 |
| Colleen Fowle | Iowa Environmental Council | Undecided | GA91 |
| Kerri Johannsen | Iowa Environmental Council | Undecided | GA91 |
| Michael Schmidt | Iowa Environmental Council | Undecided | GA91 |
| Noah Hackbart | Iowa Environmental Council | Undecided | GA91 |
| Sarah Green | Iowa Environmental Council | Undecided | GA91 |
| Threase Harms | Iowa Environmental Council | Undecided | GA91 |
| Noah Hackbart | Iowa Farmers Union | Undecided | GA91 |
| Threase Harms | Iowa Farmers Union | Undecided | GA91 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA91 |
| Casey Nickel | Iowa Society of Certified Public Accountants | Undecided | GA91 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA91 |
| Brad Epperly | Iowa State Association of Assessors | Undecided | GA91 |
| Casey Nickel | Iowa State Association of Assessors | Undecided | GA91 |
| Dustin Miller | Iowa State Association of Assessors | Undecided | GA91 |
| Andrea Woodard | Iowa State Association of Counties | Undecided | GA91 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA91 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA91 |
| Andrea Woodard | Iowa State Association of County Supervisors | Supporting | GA91 |
| Jamie Cashman | Iowa State Association of County Supervisors | Supporting | GA91 |
| Lucas Beenken | Iowa State Association of County Supervisors | Supporting | GA91 |
| David Adelman | Iowa Wood Industry Association | Undecided | GA91 |
| Frank Chiodo | Iowa Wood Industry Association | Undecided | GA91 |
| Matt Hinch | Iowa Wood Industry Association | Undecided | GA91 |
| Paige Thorson | Iowa Wood Industry Association | Undecided | GA91 |
| Sara Allen | Iowa Wood Industry Association | Undecided | GA91 |
| Scott Newhard | Iowa Wood Industry Association | Undecided | GA91 |
| Gary Grant | Linn County Board of Supervisors | Opposing | GA91 |
| Larry Murphy | Linn County Board of Supervisors | Opposing | GA91 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA91 |
| Kelly Meyers | Marion County Board of Supervisors | Undecided | GA91 |
| Gary Grant | Midwestern Trading, Inc. | Opposing | GA91 |
| Larry Murphy | Midwestern Trading, Inc. | Opposing | GA91 |
| Gary Grant | Urban County Coalition | Opposing | GA91 |
| Larry Murphy | Urban County Coalition | Opposing | GA91 |
| John Strathman | VALOR Iowa | Supporting | GA91 |