| Alyson DeMoss | 29th State Development | Opposing | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA90 |
| Jefferson Fink | Coalition for Iowa Woodlands and Trees | Opposing | GA90 |
| Jim Obradovich | Coalition for Iowa Woodlands and Trees | Opposing | GA90 |
| Victoria Sinclair | Coalition for Iowa Woodlands and Trees | Opposing | GA90 |
| Greta Haas | Iowa Association of Realtors | Undecided | GA90 |
| Jennifer Kingland | Iowa Association of Realtors | Undecided | GA90 |
| Eric Goranson | Iowa Bowhunters Association | Opposing | GA90 |
| Larry Murphy | Iowa Catholic Conference | Opposing | GA90 |
| Tom Chapman | Iowa Catholic Conference | Opposing | GA90 |
| Cora Fox | Iowa Cattlemen's Association | Supporting | GA90 |
| Jake Swanson | Iowa Cattlemen's Association | Supporting | GA90 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA90 |
| Jefferson Fink | Iowa Conservation Alliance | Opposing | GA90 |
| Jim Obradovich | Iowa Conservation Alliance | Opposing | GA90 |
| Victoria Sinclair | Iowa Conservation Alliance | Opposing | GA90 |
| Jeff Smith | Iowa Corn Growers Association | Supporting | GA90 |
| Maggie Smith-Fitzgerald | Iowa Corn Growers Association | Supporting | GA90 |
| Matt Fitzgerald | Iowa Corn Growers Association | Supporting | GA90 |
| Mindy Poldberg | Iowa Corn Growers Association | Supporting | GA90 |
| Todd Coffelt | Iowa Dept. of Natural Resources | Undecided | GA90 |
| Chelsea Hoye | Iowa Environmental Council | Opposing | GA90 |
| Threase Harms | Iowa Environmental Council | Opposing | GA90 |
| Kevin Kuhle | Iowa Farm Bureau Federation | Supporting | GA90 |
| Matt Gronewald | Iowa Farm Bureau Federation | Supporting | GA90 |
| Matthew Steinfeldt | Iowa Farm Bureau Federation | Supporting | GA90 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA90 |
| Casey Nickel | Iowa Society of Certified Public Accountants | Undecided | GA90 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA90 |
| Doug Struyk | Iowa Soybean Association | Supporting | GA90 |
| Jennifer Dorman | Iowa Soybean Association | Supporting | GA90 |
| Jim Carney | Iowa Soybean Association | Supporting | GA90 |
| Phil Jeneary | Iowa Sportsmans Club | Opposing | GA90 |
| Mike Heller | Iowa State Association of Assessors | Undecided | GA90 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA90 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA90 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA90 |
| William Peterson | Iowa State Association of Counties | Undecided | GA90 |
| Jamie Cashman | Iowa State Association of County Supervisors | Supporting | GA90 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Supporting | GA90 |
| Lucas Beenken | Iowa State Association of County Supervisors | Supporting | GA90 |
| William Peterson | Iowa State Association of County Supervisors | Supporting | GA90 |
| David Adelman | Iowa Wood Industry Association | Opposing | GA90 |
| Frank Chiodo | Iowa Wood Industry Association | Opposing | GA90 |
| Matt Hinch | Iowa Wood Industry Association | Opposing | GA90 |
| Paige Thorson | Iowa Wood Industry Association | Opposing | GA90 |
| Sara Allen | Iowa Wood Industry Association | Opposing | GA90 |
| Scott Newhard | Iowa Wood Industry Association | Opposing | GA90 |
| Dane Schumann | Izaak Walton League - Iowa Division | Opposing | GA90 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA90 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA90 |
| Kellie Paschke | Marion County Board of Supervisors | Supporting | GA90 |
| Kelly Meyers | Marion County Board of Supervisors | Supporting | GA90 |
| Eric Goranson | Pheasants Forever, Inc. & Quail Forever | Opposing | GA90 |
| Doug Struyk | The Nature Conservancy | Opposing | GA90 |
| Jennifer Dorman | The Nature Conservancy | Opposing | GA90 |
| Jim Carney | The Nature Conservancy | Opposing | GA90 |
| Gary Grant | Urban County Coalition | Undecided | GA90 |
| Larry Murphy | Urban County Coalition | Undecided | GA90 |
| John Strathman | VALOR Iowa | Supporting | GA90 |