| Larry Murphy | Agribusiness Assn. of IA | Supporting | GA83 |
| Marc Beltrame | Agribusiness Assn. of IA | Undecided | GA83 |
| Steven Schoenebaum | Agribusiness Assn. of IA | Undecided | 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 |
| Linda Kinman | Des Moines Water Works | Opposing | GA83 |
| Linda Kinman | IA. Assn. of Water Agencies | Opposing | GA83 |
| Brad Epperly | IA. Broadcasters Assn. | Undecided | GA83 |
| James West | IA. Broadcasters Assn. | Undecided | GA83 |
| Keith Luchtel | IA. Broadcasters Assn. | Undecided | GA83 |
| Paula Dierenfeld | IA. Broadcasters Assn. | Undecided | GA83 |
| Scott Sundstrom | IA. Broadcasters Assn. | Undecided | GA83 |
| Tom Chapman | IA. Catholic Conference | Opposing | GA83 |
| Bruce Berven | IA. Cattlemen's Assn. | Supporting | GA83 |
| Tom Shipley | IA. Cattlemen's Assn. | Supporting | GA83 |
| Lyle Krewson | IA. Chapter of Sierra Club | Opposing | GA83 |
| Matt Ohloff | IA. Citizens for Community Improvement | Opposing | GA83 |
| Jerry Fitzgerald | IA. Corn Growers Assn.(ICG) | Supporting | GA83 |
| Maggie Smith-Fitzgerald | IA. Corn Growers Assn.(ICG) | Supporting | GA83 |
| Mark Joyce | IA. Corn Growers Assn.(ICG) | Supporting | GA83 |
| Mindy Poldberg | IA. Corn Growers Assn.(ICG) | Supporting | GA83 |
| Sharon Tahtinen | IA. Dept. of Natural Resources | Opposing | GA83 |
| Jim Obradovich | IA. Environmental Council | Opposing | GA83 |
| Lynn Laws | IA. Environmental Council | Opposing | 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 |
| Brad Epperly | IA. Newspaper Assn. | Undecided | GA83 |
| James West | IA. Newspaper Assn. | Undecided | GA83 |
| Keith Luchtel | IA. Newspaper Assn. | Undecided | GA83 |
| Paula Dierenfeld | IA. Newspaper Assn. | Undecided | GA83 |
| Scott Sundstrom | IA. Newspaper Assn. | Undecided | GA83 |
| Jeffrey Schnell | IA. Pork Producers Assn. (IPP) | Supporting | GA83 |
| Jerry Fitzgerald | IA. Pork Producers Assn. (IPP) | Supporting | GA83 |
| Jerry Fitzgerald | IA. Pork Producers Assn. (IPP) | Undecided | GA83 |
| Maggie Smith-Fitzgerald | IA. Pork Producers Assn. (IPP) | Supporting | GA83 |
| Maggie Smith-Fitzgerald | IA. Pork Producers Assn. (IPP) | Undecided | GA83 |
| Mark Joyce | IA. Pork Producers Assn. (IPP) | Supporting | GA83 |
| Mark Joyce | IA. Pork Producers Assn. (IPP) | Undecided | GA83 |
| Kevin Vinchattle | IA. Poultry Assn. | Supporting | 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 | Undecided | GA83 |
| Michael Blaser | M2P2, LLC | Undecided | GA83 |
| MIke Delaney | Raccoon River Watershed Assn. | Opposing | GA83 |
| Marc Beltrame | Smithfield Foods, Inc. | Undecided | GA83 |
| Steven Schoenebaum | Smithfield Foods, Inc. | Undecided | GA83 |