| Drew Klein | Americans For Prosperity | Supporting | GA89 |
| Tyler Raygor | Americans For Prosperity | Supporting | GA89 |
| Brad Epperly | Ames Chamber of Commerce | Supporting | GA89 |
| Dustin Miller | Ames Chamber of Commerce | Supporting | GA89 |
| Barbra Solberg | Cedar Rapids Metro Economic Alliance | Supporting | GA89 |
| David Caris | Community Bankers of Iowa | Supporting | GA89 |
| Drew Kamp | Council Bluffs Chamber of Commerce | Supporting | GA89 |
| Dan Gannon | DAV-Iowa | Supporting | GA89 |
| David Thornburg | DAV-Iowa | Supporting | GA89 |
| Clara Wulfsen | Department of Revenue | Undecided | GA89 |
| Andrea Woodard | Greater Des Moines Partnership | Supporting | GA89 |
| Brad Epperly | Greater Des Moines Partnership | Supporting | GA89 |
| Dustin Miller | Greater Des Moines Partnership | Supporting | GA89 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Mike Rozenboom | Iowa Bankers Association | Supporting | GA89 |
| Sharon Presnall | Iowa Bankers Association | Supporting | GA89 |
| Brad Epperly | Iowa Chamber Alliance | Supporting | GA89 |
| Dustin Miller | Iowa Chamber Alliance | Supporting | GA89 |
| David Adelman | Iowa Health Care Association | Supporting | GA89 |
| Frank Chiodo | Iowa Health Care Association | Supporting | GA89 |
| Matt Hinch | Iowa Health Care Association | Supporting | GA89 |
| Merea Bentrott | Iowa Health Care Association | Supporting | GA89 |
| Sara Allen | Iowa Health Care Association | Supporting | GA89 |
| Erin Cubit | Iowa Hospital Association | Undecided | GA89 |
| J. Norris | Iowa Hospital Association | Undecided | GA89 |
| Kim Murphy | Iowa Hospital Association | Undecided | GA89 |
| Maureen Keehnle | Iowa Hospital Association | Undecided | GA89 |
| Nicole Proesch | Iowa Hospital Association | Undecided | GA89 |
| Eric Goranson | Iowa Restaurant Association | Supporting | GA89 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Supporting | GA89 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA89 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Supporting | GA89 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA89 |
| Doug Struyk | Iowa State Bar Association | Supporting | GA89 |
| Jennifer Dorman | Iowa State Bar Association | Supporting | GA89 |
| Jim Carney | Iowa State Bar Association | Supporting | GA89 |
| Tom Sands | Iowa Taxpayers Association | Supporting | GA89 |
| Ernie Adkison | Iowans for Tax Relief | Supporting | GA89 |
| Victoria Sinclair | Iowans for Tax Relief | Supporting | GA89 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA89 |
| R. Bruce Beeston | Veterans National Recovery Center | Supporting | GA89 |