| Kate Walton | Arconic (Formerly Alcoa) | Undecided | GA91 |
| Madeleine Bradley | Arconic (Formerly Alcoa) | Undecided | GA91 |
| Matt Eide | Arconic (Formerly Alcoa) | Undecided | GA91 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA91 |
| Gary Grant | City of Cedar Rapids | Undecided | GA91 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA91 |
| Tyler Ackerson | Department of Revenue | Supporting | GA91 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Undecided | GA91 |
| John Davis | Iowa Association of Business and Industry (ABI) | Undecided | GA91 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA91 |
| Greta Haas | Iowa Association of Realtors | Undecided | GA91 |
| Jennifer Kingland | Iowa Association of Realtors | Undecided | GA91 |
| Larry Murphy | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Undecided | GA91 |
| Mike Heller | Iowa Renewable Fuels Association (IRF) | Undecided | GA91 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA91 |
| Casey Nickel | Iowa Society of Certified Public Accountants | Undecided | GA91 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA91 |
| Nate Ristow | Iowa Taxpayers Association | Undecided | GA91 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA91 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA91 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA91 |
| Kelly Meyers | Marion County Board of Supervisors | Undecided | GA91 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Undecided | GA91 |
| Mike Heller | Petroleum Marketers Management Insurance Company (PMMIC) | Undecided | GA91 |
| Ryan Sempf | Quad Cities Chamber of Commerce | Undecided | GA91 |
| Christopher Rants | Quality Technology Services LLC | Undecided | GA91 |
| Justin Hupfer | Quality Technology Services LLC | Undecided | GA91 |
| Kate Walton | Tyson Foods, Inc. | Undecided | GA91 |
| Madeleine Bradley | Tyson Foods, Inc. | Undecided | GA91 |
| Matt Eide | Tyson Foods, Inc. | Undecided | GA91 |
| Gary Grant | Urban County Coalition | Undecided | GA91 |
| Larry Murphy | Urban County Coalition | Undecided | GA91 |
| Mike Heller | Waste Management, Inc. | Undecided | GA91 |