| Adam Gregg | Agribusiness Assn. of IA | Undecided | GA83 |
| Jerry Fitzgerald | Agribusiness Assn. of IA | Undecided | GA83 |
| Maggie Smith-Fitzgerald | Agribusiness Assn. of IA | Undecided | GA83 |
| Marc Beltrame | Agribusiness Assn. of IA | Undecided | GA83 |
| Mark Joyce | Agribusiness Assn. of IA | Undecided | GA83 |
| Terry Harrmann | Alliant Energy Corporation | Undecided | GA83 |
| Jason Francque | Deere & Company | Undecided | GA83 |
| Jay Byers | Greater Des Moines Partnership | Undecided | GA83 |
| Bill Wimmer | Home Builders Assn. of IA | Undecided | GA83 |
| Craig Schoenfeld | Home Builders Assn. of IA | Undecided | GA83 |
| John Gilliland | IA. Assn. of Business and Industry (ABI) | Undecided | GA83 |
| Michael Ralston | IA. Assn. of Business and Industry (ABI) | Undecided | GA83 |
| Nicole Crain | IA. Assn. of Business and Industry (ABI) | Undecided | GA83 |
| Jill Altringer | IA. Cattlemen's Assn. | Undecided | GA83 |
| Neila Seaman | IA. Chapter of Sierra Club | Undecided | GA83 |
| Adam Mason | IA. Citizens for Community Improvement | Undecided | GA83 |
| Jerry Fitzgerald | IA. Corn Growers Assn.(ICG) | Undecided | GA83 |
| Maggie Smith-Fitzgerald | IA. Corn Growers Assn.(ICG) | Undecided | GA83 |
| Mark Joyce | IA. Corn Growers Assn.(ICG) | Undecided | GA83 |
| Sharon Tahtinen | IA. Dept. of Natural Resources | Supporting | GA83 |
| Jim Obradovich | IA. Environmental Council | Undecided | GA83 |
| Leland Searles | IA. Environmental Council | Undecided | GA83 |
| Don Petersen | IA. Farm Bureau Federation | Undecided | GA83 |
| Joe Johnson | IA. Farm Bureau Federation | Undecided | GA83 |
| Mark Salvador | IA. Farm Bureau Federation | Undecided | GA83 |
| Jen Schulte | IA. Farmers Union | Undecided | GA83 |
| Kent Hartwig | IA. Farmers Union | Undecided | GA83 |
| Kyle Frette | IA. Farmers Union | Undecided | GA83 |
| Threase Harms | IA. Farmers Union | Undecided | 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 |
| Emily Piper | IA. Rural Water Assn. | Supporting | GA83 |
| Cal Hultman | Lafarge North American | Undecided | GA83 |
| Michael Triplett | Lafarge North American | Undecided | GA83 |
| Adam Gregg | M2P2, LLC | Undecided | GA83 |
| Marc Beltrame | M2P2, LLC | Undecided | GA83 |
| Michael Blaser | M2P2, LLC | Undecided | GA83 |
| Brad Epperly | Monsanto Company | Undecided | GA83 |
| James West | Monsanto Company | Undecided | GA83 |
| Keith Luchtel | Monsanto Company | Undecided | GA83 |
| Scott Sundstrom | Monsanto Company | Undecided | GA83 |
| Adam Gregg | Smithfield Foods, Inc. | Undecided | GA83 |
| Marc Beltrame | Smithfield Foods, Inc. | Undecided | GA83 |
| Mike Heller | Waste Management, Inc. | Undecided | GA83 |
| Paula Feltner | Waste Management, Inc. | Undecided | GA83 |