| 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 |
| David Scott | American Water Works Assn. | Undecided | GA83 |
| Gary Grant | City of Cedar Rapids | Undecided | GA83 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA83 |
| Jim Obradovich | Conservation Districts of IA | Undecided | GA83 |
| Linda Kinman | Des Moines Water Works | Undecided | GA83 |
| Adam Gregg | Ducks Unlimited, Inc. | Undecided | GA83 |
| Marc Beltrame | Ducks Unlimited, Inc. | Undecided | GA83 |
| Jay Byers | Greater Des Moines Partnership | Undecided | GA83 |
| Jennifer Kingland | IA. Assn. of Realtors | Undecided | GA83 |
| Susan Cameron Daemen | IA. Assn. of Realtors | Undecided | GA83 |
| Linda Kinman | IA. Assn. of Water Agencies | 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 |
| Joe Kelly | IA. County Attorneys Assn. | Opposing | GA83 |
| Susan Cameron Daemen | IA. County Attorneys Assn. | Opposing | GA83 |
| Lyle Brehm | IA. County Engineers Assn. | Opposing | GA83 |
| Lyle Brehm | IA. County Engineers Assn. | Undecided | GA83 |
| Diane Foss | IA. Dept. of Economic Development (IDED) | Undecided | GA83 |
| Sharon Tahtinen | IA. Dept. of Natural Resources | Undecided | GA83 |
| John Torbert | IA. Drainage District Assn. | Opposing | GA83 |
| Michael Wentzien | IA. Drainage District Assn. | Opposing | GA83 |
| Jen Schulte | IA. Emergency Management Assn. | Undecided | GA83 |
| Kent Hartwig | IA. Emergency Management Assn. | Undecided | GA83 |
| Kyle Frette | IA. Emergency Management Assn. | Undecided | GA83 |
| Threase Harms | IA. Emergency Management Assn. | Undecided | GA83 |
| Jim Obradovich | IA. Environmental Council | Undecided | GA83 |
| Leland Searles | IA. Environmental Council | Undecided | GA83 |
| Joe Johnson | IA. Farm Bureau Federation | Opposing | GA83 |
| Mark Salvador | IA. Farm Bureau Federation | Opposing | 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 |
| John Benson | IA. Homeland Security & Emergency Management Div. | Undecided | GA83 |
| Alan Kemp | IA. League of Cities | Undecided | GA83 |
| Jessica Hyland | IA. League of Cities | Undecided | GA83 |
| Julie Smith | IA. League of Cities | Undecided | GA83 |
| Larry Pope | IA. League of Cities | Undecided | GA83 |
| Megan Peiffer | IA. League of Cities | Undecided | 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 |
| 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. | Undecided | GA83 |
| Hanna DeGroot | IA. State Assn. of Counties | Undecided | GA83 |
| Linda Hinton | IA. State Assn. of Counties | Undecided | GA83 |
| MaryBeth Mellick | 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 |
| Roy Overton | Izaak Walton League - Iowa Division | Supporting | GA83 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA83 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA83 |
| Laverne Schroeder | Loess Hills Alliance | Undecided | GA83 |
| Amy Campbell | Professional Developers of IA (PDI) | Undecided | GA83 |
| Craig Patterson | Professional Developers of IA (PDI) | Undecided | GA83 |
| Susan Judkins | Rebuild IA Office | Undecided | GA83 |