| Jim Obradovich | Conservation Districts of IA | Undecided | GA83 |
| Neila Seaman | IA. Chapter of Sierra Club | 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 | Opposing | GA83 |
| Sharon Tahtinen | IA. Dept. of Natural Resources | Undecided | GA83 |
| John Torbert | IA. Drainage District Assn. | Supporting | GA83 |
| Michael Wentzien | IA. Drainage District Assn. | Supporting | GA83 |
| Jim Obradovich | IA. Environmental Council | Opposing | GA83 |
| Jim Obradovich | IA. Environmental Council | Undecided | GA83 |
| Leland Searles | IA. Environmental Council | Opposing | 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 | Opposing | GA83 |
| Kent Hartwig | IA. Farmers Union | Opposing | GA83 |
| Kyle Frette | IA. Farmers Union | Opposing | GA83 |
| Threase Harms | IA. Farmers Union | Opposing | 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 |
| Michael Wentzien | IA. State Assn. of County Supervisors | Supporting | GA83 |
| Brad Epperly | IA. Water Well Assn. | Undecided | GA83 |
| James West | IA. Water Well Assn. | Undecided | GA83 |
| Keith Luchtel | IA. Water Well Assn. | Undecided | GA83 |
| Paula Dierenfeld | IA. Water Well Assn. | Undecided | GA83 |
| Scott Sundstrom | IA. Water Well Assn. | Undecided | GA83 |
| Mike Heller | Petroleum Marketers Management Insurance Company (PMMIC) | Undecided | GA83 |
| Paula Feltner | Petroleum Marketers Management Insurance Company (PMMIC) | Undecided | GA83 |