| Angela Davis | Home Builders Association of Iowa | Undecided | GA85 |
| Bill Wimmer | Home Builders Association of Iowa | Undecided | GA85 |
| Kevin Condon | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Justine Stevenson | Iowa Cattlemen's Association | Undecided | GA85 |
| Kellie Paschke | Iowa Cattlemen's Association | Undecided | GA85 |
| Lindsay Phillips | Iowa Cattlemen's Association | Undecided | GA85 |
| Troy Skinner | Iowa Cattlemen's Association | Undecided | GA85 |
| Doug Struyk | Iowa Drainage District Association | Supporting | GA85 |
| George Appleby | Iowa Drainage District Association | Supporting | GA85 |
| Jennifer Tyler | Iowa Drainage District Association | Supporting | GA85 |
| Jim Carney | Iowa Drainage District Association | Supporting | GA85 |
| John Torbert | Iowa Drainage District Association | Supporting | GA85 |
| Mona Bond | Iowa Drainage District Association | Supporting | GA85 |
| Hanna DeGroot | Iowa State Association of Counties | Undecided | GA85 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA85 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA85 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA85 |
| William Peterson | Iowa State Association of Counties | Undecided | GA85 |
| William Heckroth | Iowa State Association of County Supervisors | Undecided | GA85 |
| Michael Triplett | Union Pacific Railroad | Undecided | GA85 |