| Taylor Sklenar | Climate Land Leaders | Opposing | GA91 |
| Jefferson Fink | Coalition for Iowa Woodlands and Trees | Opposing | GA91 |
| Jefferson Fink | Coalition for Iowa Woodlands and Trees | Undecided | GA91 |
| Jim Obradovich | Coalition for Iowa Woodlands and Trees | Opposing | GA91 |
| Jim Obradovich | Coalition for Iowa Woodlands and Trees | Undecided | GA91 |
| Victoria Sinclair | Coalition for Iowa Woodlands and Trees | Opposing | GA91 |
| Victoria Sinclair | Coalition for Iowa Woodlands and Trees | Undecided | GA91 |
| Jefferson Fink | Conservation Districts of Iowa | Undecided | GA91 |
| Jim Obradovich | Conservation Districts of Iowa | Undecided | GA91 |
| Victoria Sinclair | Conservation Districts of Iowa | Undecided | GA91 |
| Arthur Roche | Dubuque Area Land and Water Legacy | Undecided | GA91 |
| Greta Haas | Iowa Association of Realtors | Undecided | GA91 |
| Jennifer Kingland | Iowa Association of Realtors | Undecided | GA91 |
| Eric Goranson | Iowa Bowhunters Association | Undecided | GA91 |
| Tom Chapman | Iowa Catholic Conference | Undecided | GA91 |
| Jake Swanson | Iowa Cattlemen's Association | Undecided | GA91 |
| Kelli Wicks | Iowa Cattlemen's Association | Undecided | GA91 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA91 |
| Jefferson Fink | Iowa Conservation Alliance | Undecided | GA91 |
| Jim Obradovich | Iowa Conservation Alliance | Undecided | GA91 |
| Victoria Sinclair | Iowa Conservation Alliance | Undecided | GA91 |
| Emily Callison | Iowa Corn Growers Association | Supporting | GA91 |
| Jeff Smith | Iowa Corn Growers Association | Supporting | GA91 |
| Kevin Studer | Iowa Corn Growers Association | Supporting | GA91 |
| Maggie Smith-Fitzgerald | Iowa Corn Growers Association | Supporting | GA91 |
| Matt Fitzgerald | Iowa Corn Growers Association | Supporting | 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 |
| Clara Wulfsen | Iowa Soybean Association | Supporting | GA91 |
| Doug Struyk | Iowa Soybean Association | Supporting | GA91 |
| Jennifer Dorman | Iowa Soybean Association | Supporting | GA91 |
| Jim Carney | Iowa Soybean Association | Supporting | GA91 |
| Katie Hall | Iowa Soybean Association | Supporting | GA91 |
| Matt Herman | Iowa Soybean Association | Supporting | GA91 |
| Megan Decker | Iowa Soybean Association | Supporting | GA91 |
| Phil Jeneary | Iowa Sportsmans Club | 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 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA91 |
| Kelly Meyers | Marion County Board of Supervisors | Undecided | GA91 |
| Gary Grant | Midwestern Trading, Inc. | Undecided | GA91 |
| Larry Murphy | Midwestern Trading, Inc. | Undecided | GA91 |
| John Strathman | VALOR Iowa | Undecided | GA91 |