| Jay Byers | Greater Des Moines Partnership | Undecided | GA83 |
| John Gilliland | IA. Assn. of Business and Industry (ABI) | Undecided | GA83 |
| Michael Ralston | IA. Assn. of Business and Industry (ABI) | Undecided | GA83 |
| Nicole Crain | IA. Assn. of Business and Industry (ABI) | Undecided | GA83 |
| Brad Epperly | IA. Automobile Dealers Assn. | Undecided | GA83 |
| James West | IA. Automobile Dealers Assn. | Undecided | GA83 |
| Keith Luchtel | IA. Automobile Dealers Assn. | Undecided | GA83 |
| Paula Dierenfeld | IA. Automobile Dealers Assn. | Undecided | GA83 |
| Scott Sundstrom | IA. Automobile Dealers Assn. | Undecided | GA83 |
| Brad Epperly | IA. Broadcasters Assn. | Undecided | GA83 |
| James West | IA. Broadcasters Assn. | Undecided | GA83 |
| Keith Luchtel | IA. Broadcasters Assn. | Undecided | GA83 |
| Paula Dierenfeld | IA. Broadcasters Assn. | Undecided | GA83 |
| Scott Sundstrom | IA. Broadcasters Assn. | Undecided | 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 |
| Laverne Schroeder | IA. Nebraska Farm Equipment Dealers Assn. | Supporting | 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 |
| 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 |
| 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 |
| Kimberlee Pieper | IBEW IA State Conference | Opposing | GA83 |
| Cloyd Robinson | Iowans for Tax Relief | Supporting | GA83 |
| Edward Failor, | Iowans for Tax Relief | Supporting | GA83 |
| Katie Koberg | Iowans for Tax Relief | Supporting | GA83 |
| Mary Earnhardt | Iowans for Tax Relief | Supporting | GA83 |