| Larry Murphy | Agribusiness Assn. of IA | Undecided | GA83 |
| Jay Byers | Greater Des Moines Partnership | Undecided | GA83 |
| Bill Wimmer | Hy-Vee, Inc. | Undecided | GA83 |
| Craig Schoenfeld | Hy-Vee, Inc. | Undecided | GA83 |
| Gary Dickey | IA. Biodiesel Board | Supporting | GA83 |
| Jerry Fitzgerald | IA. Corn Growers Assn.(ICG) | Supporting | GA83 |
| Jerry Fitzgerald | IA. Corn Growers Assn.(ICG) | Undecided | GA83 |
| Maggie Smith-Fitzgerald | IA. Corn Growers Assn.(ICG) | Supporting | GA83 |
| Maggie Smith-Fitzgerald | IA. Corn Growers Assn.(ICG) | Undecided | GA83 |
| Mark Joyce | IA. Corn Growers Assn.(ICG) | Supporting | GA83 |
| Mark Joyce | IA. Corn Growers Assn.(ICG) | Undecided | GA83 |
| Mindy Poldberg | IA. Corn Growers Assn.(ICG) | Supporting | GA83 |
| Amber Markham | IA. Farm Bureau Federation | Supporting | GA83 |
| Joe Johnson | IA. Farm Bureau Federation | Supporting | GA83 |
| Mark Salvador | IA. Farm Bureau Federation | Supporting | GA83 |
| Brad Epperly | IA. Grocery Industry Assn. | Undecided | GA83 |
| James West | IA. Grocery Industry Assn. | Undecided | GA83 |
| Keith Luchtel | IA. Grocery Industry Assn. | Undecided | GA83 |
| Paula Dierenfeld | IA. Grocery Industry Assn. | Undecided | GA83 |
| Scott Sundstrom | IA. Grocery Industry Assn. | Undecided | 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) | Supporting | GA83 |
| Brad Epperly | IA. Society of Certified Public Accountants | Undecided | GA83 |
| James West | IA. Society of Certified Public Accountants | Undecided | GA83 |
| Keith Luchtel | IA. Society of Certified Public Accountants | Undecided | GA83 |
| Paula Dierenfeld | IA. Society of Certified Public Accountants | Undecided | GA83 |
| Scott Sundstrom | IA. Society of Certified Public Accountants | Undecided | GA83 |
| Roy Overton | Izaak Walton League - Iowa Division | Supporting | GA83 |
| Larry Blixt | KWIK Trip, Inc. | Undecided | GA83 |
| Brice Oakley | Koch Companies Public Sector, LLC and Affiliates | Undecided | GA83 |
| Don Avenson | Koch Companies Public Sector, LLC and Affiliates | Undecided | GA83 |
| Tom Cope | Koch Companies Public Sector, LLC and Affiliates | Undecided | GA83 |
| John Pederson | Kum and Go | Supporting | GA83 |
| Matt Eide | Kum and Go | Supporting | 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 |
| Dawn Carlson | Petroleum Marketers and Convenience Stores of IA | Supporting | GA83 |
| Kellie Paschke | Petroleum Marketers and Convenience Stores of IA | Supporting | GA83 |
| Troy Skinner | Petroleum Marketers and Convenience Stores of IA | Supporting | GA83 |
| Nicole Woodroffe | Renewable Energy Group (REG) | Undecided | GA83 |
| Robert Weiser | Renewable Energy Group (REG) | Undecided | GA83 |
| Steve Falck | Renewable Energy Group (REG) | Supporting | GA83 |