| John Pederson | ALCOA | Opposing | GA83 |
| John Pederson | ALCOA | Undecided | GA83 |
| Matt Eide | ALCOA | Opposing | GA83 |
| Matt Eide | ALCOA | Undecided | GA83 |
| Ted Stopulos | ALCOA | Opposing | GA83 |
| Marc Beltrame | Agribusiness Assn. of IA | Undecided | GA83 |
| Steven Schoenebaum | Agribusiness Assn. of IA | Undecided | GA83 |
| Terry Harrmann | Alliant Energy Corporation | Opposing | GA83 |
| F. Thornton | Central IA Power Cooperative (CIPCO) | Undecided | GA83 |
| Stephen Roberts | Central IA Power Cooperative (CIPCO) | Undecided | GA83 |
| Brad Epperly | Deere & Company | Opposing | GA83 |
| Brad Epperly | Deere & Company | Undecided | GA83 |
| James West | Deere & Company | Opposing | GA83 |
| James West | Deere & Company | Undecided | GA83 |
| Jason Francque | Deere & Company | Opposing | GA83 |
| Keith Luchtel | Deere & Company | Opposing | GA83 |
| Keith Luchtel | Deere & Company | Undecided | GA83 |
| Paula Dierenfeld | Deere & Company | Opposing | GA83 |
| Paula Dierenfeld | Deere & Company | Undecided | GA83 |
| Scott Sundstrom | Deere & Company | Opposing | GA83 |
| Scott Sundstrom | Deere & Company | Undecided | GA83 |
| Thomas Iles | Deere & Company | Opposing | GA83 |
| Thomas Iles | Deere & Company | Undecided | GA83 |
| Linda Kinman | Des Moines Water Works | Opposing | GA83 |
| Bill Wimmer | Home Builders Assn. of IA | Opposing | GA83 |
| Craig Schoenfeld | Home Builders Assn. of IA | Opposing | GA83 |
| Mona Bond | IA. Alliance of Environmental Concerns | Opposing | GA83 |
| John Gilliland | IA. Assn. of Business and Industry (ABI) | Opposing | GA83 |
| Michael Ralston | IA. Assn. of Business and Industry (ABI) | Opposing | GA83 |
| Nicole Crain | IA. Assn. of Business and Industry (ABI) | Opposing | GA83 |
| Brad Epperly | IA. Assn. of Electric Cooperatives | Undecided | GA83 |
| James West | IA. Assn. of Electric Cooperatives | Undecided | GA83 |
| Keith Luchtel | IA. Assn. of Electric Cooperatives | Undecided | GA83 |
| Paula Dierenfeld | IA. Assn. of Electric Cooperatives | Undecided | GA83 |
| Scott Sundstrom | IA. Assn. of Electric Cooperatives | Undecided | GA83 |
| Tim Coonan | IA. Assn. of Electric Cooperatives | Undecided | GA83 |
| Linda Kinman | IA. Assn. of Water Agencies | Opposing | GA83 |
| Lyle Krewson | IA. Chapter of Sierra Club | Supporting | GA83 |
| Neila Seaman | IA. Chapter of Sierra Club | Supporting | GA83 |
| Mindy Poldberg | IA. Corn Growers Assn.(ICG) | Opposing | GA83 |
| Sharon Tahtinen | IA. Dept. of Natural Resources | Undecided | GA83 |
| Jim Obradovich | IA. Environmental Council | Supporting | GA83 |
| Leland Searles | IA. Environmental Council | Supporting | GA83 |
| Leland Searles | IA. Environmental Council | Undecided | GA83 |
| Amber Markham | 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 | Supporting | GA83 |
| Jen Schulte | IA. Farmers Union | Undecided | GA83 |
| Kent Hartwig | IA. Farmers Union | Supporting | GA83 |
| Kent Hartwig | IA. Farmers Union | Undecided | GA83 |
| Kyle Frette | IA. Farmers Union | Supporting | GA83 |
| Kyle Frette | IA. Farmers Union | Undecided | GA83 |
| Threase Harms | IA. Farmers Union | Supporting | GA83 |
| Threase Harms | IA. Farmers Union | Undecided | GA83 |
| Alan Kemp | IA. League of Cities | Opposing | GA83 |
| Jessica Hyland | IA. League of Cities | Opposing | GA83 |
| Julie Smith | IA. League of Cities | Opposing | GA83 |
| Larry Pope | IA. League of Cities | Opposing | GA83 |
| Megan Peiffer | IA. League of Cities | Opposing | GA83 |
| Laverne Schroeder | IA. Nebraska Farm Equipment Dealers Assn. | Opposing | GA83 |
| Jerry Fitzgerald | IA. Renewable Fuels Assn. (IRF) | Undecided | GA83 |
| Maggie Smith-Fitzgerald | IA. Renewable Fuels Assn. (IRF) | Undecided | GA83 |
| Mark Joyce | IA. Renewable Fuels Assn. (IRF) | Undecided | GA83 |
| Montgomery Shaw | IA. Renewable Fuels Assn. (IRF) | Undecided | GA83 |
| Jerry Peckumn | IA. Rivers Revival | Supporting | GA83 |
| Rosalyn Lehman | IA. Rivers Revival | Supporting | GA83 |
| Emily Piper | IA. Rural Water Assn. | Opposing | GA83 |
| Roy Overton | Izaak Walton League - Iowa Division | Supporting | GA83 |
| Adam Gregg | M2P2, LLC | Undecided | GA83 |
| Marc Beltrame | M2P2, LLC | Undecided | GA83 |
| Michael Blaser | M2P2, LLC | Undecided | GA83 |
| Mona Bond | Manatts Inc. | Opposing | GA83 |
| Chad Kleppe | Master Builders of IA | Undecided | GA83 |
| John Pederson | Missouri River Energy Services | Undecided | GA83 |
| Matt Eide | Missouri River Energy Services | Undecided | GA83 |
| Brad Epperly | Monsanto Company | Opposing | GA83 |
| James West | Monsanto Company | Opposing | GA83 |
| Keith Luchtel | Monsanto Company | Opposing | GA83 |
| Paula Dierenfeld | Monsanto Company | Opposing | GA83 |
| Scott Sundstrom | Monsanto Company | Opposing | GA83 |
| MIke Delaney | Raccoon River Watershed Assn. | Supporting | GA83 |
| George Appleby | SSAB (f/k/a IPSCO Steel) | Undecided | GA83 |
| Jennifer Tyler | SSAB (f/k/a IPSCO Steel) | Undecided | GA83 |
| Jim Carney | SSAB (f/k/a IPSCO Steel) | Undecided | GA83 |
| Adam Gregg | Smithfield Foods, Inc. | Undecided | GA83 |
| Marc Beltrame | Smithfield Foods, Inc. | Undecided | GA83 |
| Steven Schoenebaum | Smithfield Foods, Inc. | Undecided | GA83 |