| Jake Highfill | American Petroleum Institute | Supporting | GA90 |
| Tony Phillips | American Petroleum Institute | Supporting | GA90 |
| Robert Weiser | Annett Holdings | Undecided | GA90 |
| Scott Newhard | Associated General Contractors of Iowa | Supporting | GA90 |
| Brad Epperly | BNSF Railway Co. | Undecided | GA90 |
| Dustin Miller | BNSF Railway Co. | Undecided | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA90 |
| Jeff Smith | Greater Fort Dodge Growth Alliance | Supporting | GA90 |
| Maggie Smith-Fitzgerald | Greater Fort Dodge Growth Alliance | Supporting | GA90 |
| Matt Fitzgerald | Greater Fort Dodge Growth Alliance | Supporting | GA90 |
| Kellie Paschke | Iowa Cattlemen's Association | Undecided | GA90 |
| Kelly Meyers | Iowa Cattlemen's Association | Undecided | GA90 |
| Troy Skinner | Iowa Cattlemen's Association | Undecided | GA90 |
| Lyle Brehm | Iowa County Engineers Association | Supporting | GA90 |
| Susan Fenton | Iowa Dept. of Transportation | Supporting | GA90 |
| Alan Kemp | Iowa League of Cities | Undecided | GA90 |
| Daniel Stalder | Iowa League of Cities | Undecided | GA90 |
| Robert Palmer | Iowa League of Cities | Undecided | GA90 |
| David Adelman | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA90 |
| Frank Chiodo | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA90 |
| Lillie Brady | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA90 |
| Matt Hinch | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA90 |
| Sara Allen | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA90 |
| Will Rogers | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA90 |
| Sydney Gangestad | Iowa Propane Gas Association | Undecided | GA90 |
| Tim Coonan | Iowa Propane Gas Association | Undecided | GA90 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA90 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA90 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA90 |
| William Peterson | Iowa State Association of Counties | Undecided | GA90 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA90 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA90 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA90 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA90 |
| Kellie Paschke | Landus Cooperative | Undecided | GA90 |
| Kelly Meyers | Landus Cooperative | Undecided | GA90 |
| Troy Skinner | Landus Cooperative | Undecided | GA90 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA90 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA90 |
| Paige Thorson | Marathon Petroleum Corporation and its Subsidiaries | Supporting | GA90 |
| Michael Triplett | Union Pacific Railroad | Undecided | GA90 |
| Gary Grant | Urban County Coalition | Undecided | GA90 |
| Larry Murphy | Urban County Coalition | Undecided | GA90 |