| Larry Murphy | Agribusiness Assn. of IA | Supporting | GA83 |
| Marc Beltrame | Agribusiness Assn. of IA | Supporting | GA83 |
| Steven Schoenebaum | Agribusiness Assn. of IA | Supporting | GA83 |
| Andrew Baumert | Board of Regents, State of IA | Undecided | GA83 |
| David Miles | Board of Regents, State of IA | Undecided | GA83 |
| Joe Murphy | Board of Regents, State of IA | Undecided | GA83 |
| Keith Saunders | Board of Regents, State of IA | Undecided | GA83 |
| Robert Donley | Board of Regents, State of IA | Undecided | GA83 |
| Jim Obradovich | Conservation Districts of IA | Undecided | GA83 |
| Linda Kinman | Des Moines Water Works | Opposing | GA83 |
| Linda Kinman | Des Moines Water Works | Undecided | GA83 |
| Linda Kinman | IA. Assn. of Water Agencies | Undecided | GA83 |
| Robert Hartwig | IA. Bankers Assn. | Undecided | GA83 |
| Sharon Presnall | IA. Bankers Assn. | Undecided | GA83 |
| Tom Shipley | IA. Cattlemen's Assn. | Supporting | GA83 |
| Lyle Krewson | IA. Chapter of Sierra Club | Opposing | GA83 |
| Adam Mason | IA. Citizens for Community Improvement | Opposing | GA83 |
| Chris Neubert | IA. Citizens for Community Improvement | Opposing | GA83 |
| Matthew Covington | IA. Citizens for Community Improvement | Opposing | GA83 |
| Natalie Snyders | IA. Citizens for Community Improvement | Opposing | GA83 |
| Mindy Poldberg | IA. Corn Growers Assn.(ICG) | Undecided | GA83 |
| Sharon Tahtinen | IA. Dept. of Natural Resources | Opposing | GA83 |
| Jim Obradovich | IA. Environmental Council | Opposing | GA83 |
| Jim Obradovich | IA. Environmental Council | Undecided | GA83 |
| Amber Markham | IA. Farm Bureau Federation | Supporting | GA83 |
| Joe Johnson | IA. Farm Bureau Federation | Supporting | GA83 |
| Mark Salvador | IA. Farm Bureau Federation | Supporting | GA83 |
| Jerry Fitzgerald | IA. Pork Producers Assn. (IPP) | Undecided | GA83 |
| Maggie Smith-Fitzgerald | IA. Pork Producers Assn. (IPP) | Undecided | GA83 |
| Mark Joyce | IA. Pork Producers Assn. (IPP) | Undecided | GA83 |
| Kevin Vinchattle | IA. Poultry Assn. | Undecided | GA83 |
| George Appleby | IA. State Bar Assn. | Undecided | GA83 |
| Jennifer Tyler | IA. State Bar Assn. | Undecided | GA83 |
| Jim Carney | IA. State Bar Assn. | Undecided | GA83 |
| George Appleby | IA. Veterinary Medical Assn. | Undecided | GA83 |
| Jennifer Tyler | IA. Veterinary Medical Assn. | Undecided | GA83 |
| Jim Carney | IA. Veterinary Medical Assn. | Undecided | GA83 |
| Roy Overton | Izaak Walton League - Iowa Division | Opposing | GA83 |
| Brice Oakley | Koch Companies Public Sector, LLC and Affiliates | Undecided | GA83 |
| Don Avenson | Koch Companies Public Sector, LLC and Affiliates | Undecided | GA83 |
| Tom Cope | Koch Companies Public Sector, LLC and Affiliates | Undecided | GA83 |
| Marc Beltrame | M2P2, LLC | Supporting | GA83 |
| Michael Blaser | M2P2, LLC | Supporting | GA83 |
| Marc Beltrame | Smithfield Foods, Inc. | Supporting | GA83 |
| Steven Schoenebaum | Smithfield Foods, Inc. | Supporting | GA83 |