| Larry Murphy | Agribusiness Assn. of IA | Undecided | GA83 |
| Mona Bond | Agribusiness Assn. of IA | Undecided | GA83 |
| Scott Newhard | Associated General Contractors of IA | Undecided | GA83 |
| Mona Bond | City of Ankeny | Undecided | GA83 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA83 |
| Jim Obradovich | Conservation Districts of IA | Opposing | GA83 |
| Brad Epperly | Deere & Company | Undecided | GA83 |
| James West | Deere & Company | Undecided | GA83 |
| Jason Francque | Deere & Company | Undecided | GA83 |
| Keith Luchtel | Deere & Company | Undecided | GA83 |
| Paula Dierenfeld | Deere & Company | Undecided | GA83 |
| Scott Sundstrom | Deere & Company | Undecided | GA83 |
| Thomas Iles | Deere & Company | Undecided | GA83 |
| Linda Kinman | Des Moines Water Works | Opposing | GA83 |
| Linda Kinman | Des Moines Water Works | Undecided | GA83 |
| Billi Hunt | Du Pont/ Pioneer | 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 |
| Laverne Schroeder | Hungry Canyons Alliance | Undecided | GA83 |
| Laverne Schroeder | Hungry Canyons Alliance | Supporting | GA83 |
| John Gilliland | IA. Assn. of Business and Industry (ABI) | Supporting | GA83 |
| John Gilliland | IA. Assn. of Business and Industry (ABI) | Undecided | GA83 |
| Michael Ralston | IA. Assn. of Business and Industry (ABI) | Supporting | GA83 |
| Michael Ralston | IA. Assn. of Business and Industry (ABI) | Undecided | GA83 |
| Nicole Crain | IA. Assn. of Business and Industry (ABI) | Supporting | GA83 |
| Nicole Crain | IA. Assn. of Business and Industry (ABI) | Undecided | GA83 |
| Don Brazelton | IA. Assn. of County Conservation Boards | Opposing | GA83 |
| Linda Kinman | IA. Assn. of Water Agencies | Undecided | GA83 |
| Jill Altringer | IA. Cattlemen's Assn. | Undecided | 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) | 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 | Undecided | GA83 |
| Jim Obradovich | IA. Environmental Council | Opposing | GA83 |
| Lynn Laws | IA. Environmental Council | Opposing | GA83 |
| Amber Markham | IA. Farm Bureau Federation | Undecided | GA83 |
| Christina Gruenhagen | IA. Farm Bureau Federation | Undecided | GA83 |
| Joe Johnson | IA. Farm Bureau Federation | Undecided | GA83 |
| Mark Salvador | IA. Farm Bureau Federation | Undecided | GA83 |
| David Scott | IA. Good Roads Assn. | Undecided | GA83 |
| Alan Kemp | IA. League of Cities | Supporting | GA83 |
| Jessica Hyland | IA. League of Cities | Supporting | GA83 |
| Larry Pope | IA. League of Cities | Supporting | GA83 |
| Megan Peiffer | IA. League of Cities | Supporting | GA83 |
| Betty Lord-Dinan | IA. Nurses Assn. | Undecided | GA83 |
| Linda Goeldner | IA. Nurses Assn. | 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 |
| Jill Altringer | IA. Poultry Assn. | Undecided | GA83 |
| Jerry Peckumn | IA. Rivers Revival | Opposing | GA83 |
| Rosalyn Lehman | IA. Rivers Revival | Opposing | GA83 |
| Emily Piper | IA. Rural Water Assn. | Supporting | GA83 |
| Betty Lord-Dinan | IA. School Nurses Organization | Undecided | GA83 |
| Linda Goeldner | IA. School Nurses Organization | Undecided | GA83 |
| Jill Altringer | IA. Soybean Assn. | Undecided | GA83 |
| Hanna DeGroot | IA. State Assn. of Counties | Undecided | GA83 |
| Linda Hinton | IA. State Assn. of Counties | Undecided | GA83 |
| Nathan Bonnett | IA. State Assn. of Counties | Undecided | GA83 |
| William Peterson | IA. State Assn. of Counties | Undecided | GA83 |
| Michael Wentzien | IA. State Assn. of County Supervisors | Undecided | GA83 |
| Jill Altringer | IA. Turkey Federation | Undecided | GA83 |
| MIke Delaney | Izaak Walton League - Iowa Division | Opposing | GA83 |
| Roy Overton | Izaak Walton League - Iowa Division | Opposing | GA83 |
| Mona Bond | Manatts Inc. | Undecided | GA83 |
| Brad Epperly | Monsanto Company | Undecided | GA83 |
| James West | Monsanto Company | Undecided | GA83 |
| Keith Luchtel | Monsanto Company | Undecided | GA83 |
| Paula Dierenfeld | Monsanto Company | Undecided | GA83 |
| Scott Sundstrom | Monsanto Company | Undecided | GA83 |
| MIke Delaney | Raccoon River Watershed Assn. | Opposing | GA83 |
| Emily Piper | Rathbun Regional Water Assn. | Supporting | GA83 |
| Mike Heller | Waste Management, Inc. | Undecided | GA83 |
| Paula Feltner | Waste Management, Inc. | Undecided | GA83 |