| Cal Hultman | Alliance of Automobile Manufacturers | Opposing | GA83 |
| Mary Hultman | Alliance of Automobile Manufacturers | Opposing | GA83 |
| Michael Triplett | Alliance of Automobile Manufacturers | 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 |
| Bill Wimmer | Enterprise Rent-A-Car | Opposing | GA83 |
| Craig Schoenfeld | Enterprise Rent-A-Car | Opposing | GA83 |
| Jay Byers | Greater Des Moines Partnership | Undecided | GA83 |
| John Gilliland | IA. Assn. of Business and Industry (ABI) | Opposing | GA83 |
| Nicole Crain | IA. Assn. of Business and Industry (ABI) | Opposing | GA83 |
| Brad Epperly | IA. Automobile Dealers Assn. | Opposing | GA83 |
| Bruce Anderson | IA. Automobile Dealers Assn. | Opposing | GA83 |
| James West | IA. Automobile Dealers Assn. | Opposing | GA83 |
| Keith Luchtel | IA. Automobile Dealers Assn. | Opposing | GA83 |
| Paula Dierenfeld | IA. Automobile Dealers Assn. | Opposing | GA83 |
| Scott Sundstrom | IA. Automobile Dealers Assn. | Opposing | GA83 |
| Lyle Krewson | IA. Chapter of Sierra Club | Supporting | GA83 |
| NaomiSeaYoung Wittstruck | IA. Conference of United Methodist Church | Supporting | GA83 |
| Mindy Poldberg | IA. Corn Growers Assn.(ICG) | Undecided | GA83 |
| Sharon Tahtinen | IA. Dept. of Natural Resources | Undecided | GA83 |
| Jim Obradovich | IA. Environmental Council | Supporting | GA83 |
| Nathaniel Baer | IA. Environmental Council | Supporting | GA83 |
| Amber Markham | IA. Farm Bureau Federation | Opposing | GA83 |
| Joe Johnson | IA. Farm Bureau Federation | Opposing | GA83 |
| Mark Salvador | IA. Farm Bureau Federation | Opposing | GA83 |
| Brad Epperly | IA. Grocery Industry Assn. | Opposing | GA83 |
| James West | IA. Grocery Industry Assn. | Opposing | GA83 |
| Keith Luchtel | IA. Grocery Industry Assn. | Opposing | GA83 |
| Paula Dierenfeld | IA. Grocery Industry Assn. | Opposing | GA83 |
| Scott Sundstrom | IA. Grocery Industry Assn. | Opposing | GA83 |
| Laverne Schroeder | IA. Nebraska Farm Equipment Dealers Assn. | Opposing | GA83 |
| Brad Epperly | IA. Propane Gas Assn. | Undecided | GA83 |
| James West | IA. Propane Gas Assn. | Undecided | GA83 |
| Keith Luchtel | IA. Propane Gas Assn. | Undecided | GA83 |
| Paula Dierenfeld | IA. Propane Gas Assn. | Undecided | GA83 |
| Scott Sundstrom | IA. Propane Gas Assn. | Undecided | GA83 |
| Montgomery Shaw | IA. Renewable Fuels Assn. (IRF) | Undecided | GA83 |
| Roy Overton | Izaak Walton League - Iowa Division | Undecided | GA83 |
| John Pederson | Kum and Go | Undecided | GA83 |
| Matt Eide | Kum and Go | 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 |
| Robert Grayson | Office of Energy Independence | Undecided | GA83 |