| Jeff Smith | Agribusiness Association of Iowa | Supporting | GA90 |
| Maggie Smith-Fitzgerald | Agribusiness Association of Iowa | Supporting | GA90 |
| Matt Fitzgerald | Agribusiness Association of Iowa | Supporting | GA90 |
| Brad Epperly | Bayer U.S. LLC | Supporting | GA90 |
| Casey Nickel | Bayer U.S. LLC | Supporting | GA90 |
| Craig Mischo | Bayer U.S. LLC | Supporting | GA90 |
| Dustin Miller | Bayer U.S. LLC | Supporting | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA90 |
| Andy Conlin | Cicero Action | Supporting | GA90 |
| Dennis Tibben | Cicero Action | Supporting | GA90 |
| Josh Mandelbaum | Environmental Law and Policy Center | Opposing | GA90 |
| Steve Falck | Environmental Law and Policy Center | Opposing | GA90 |
| Mike Heller | Iowa Academy of Trial Lawyers | Opposing | GA90 |
| Andrew Mertens | Iowa Association for Justice | Opposing | GA90 |
| Kellie Paschke | Iowa Association for Justice | Opposing | GA90 |
| Lisa Davis-Cook | Iowa Association for Justice | Opposing | GA90 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| David Adelman | Iowa Biotechnology Association | Supporting | GA90 |
| Frank Chiodo | Iowa Biotechnology Association | Supporting | GA90 |
| Matt Hinch | Iowa Biotechnology Association | Supporting | GA90 |
| Paige Thorson | Iowa Biotechnology Association | Supporting | GA90 |
| Sara Allen | Iowa Biotechnology Association | Supporting | GA90 |
| Brad Epperly | Iowa Chamber Alliance | Supporting | GA90 |
| Casey Nickel | Iowa Chamber Alliance | Supporting | GA90 |
| Dustin Miller | Iowa Chamber Alliance | Supporting | GA90 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | 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 |
| Brad Epperly | Iowa Defense Counsel Association | Undecided | GA90 |
| Casey Nickel | Iowa Defense Counsel Association | Undecided | GA90 |
| Dustin Miller | Iowa Defense Counsel Association | 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 |
| Frederick Haskins | Iowa Insurance Associates | Supporting | GA90 |
| Doug Struyk | Iowa State Bar Association | Opposing | GA90 |
| Jennifer Dorman | Iowa State Bar Association | Opposing | GA90 |
| Jim Carney | Iowa State Bar Association | Opposing | GA90 |
| Dane Schumann | Izaak Walton League - Iowa Division | Opposing | GA90 |
| John Hall | Marshalltown Area Chamber of Commerce | Supporting | GA90 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA90 |
| Mona Bond | Syngenta | Opposing | GA90 |
| Steven Schoenebaum | Syngenta Crop Protection | Opposing | GA90 |