| Connor Slack | Brain Injury Alliance of Iowa | Undecided | GA87 |
| Dane Schumann | Brain Injury Alliance of Iowa | Undecided | GA87 |
| Emily Hockins | Brain Injury Alliance of Iowa | Undecided | GA87 |
| Threase Harms | Brain Injury Alliance of Iowa | Undecided | GA87 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Undecided | GA87 |
| Jessica Hyland | Iowa Association of Business and Industry (ABI) | Undecided | GA87 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA87 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA87 |
| Kellie Paschke | Iowa Cattlemen's Association | Undecided | GA87 |
| Troy Skinner | Iowa Cattlemen's Association | Undecided | GA87 |
| Neila Seaman | Iowa Chapter of Sierra Club | Opposing | GA87 |
| MARK MAXWELL | Iowa Motorcycle Dealers Association | Opposing | GA87 |
| MARK MAXWELL | Iowa Motorcycle Dealers Association | Undecided | GA87 |
| David Adelman | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA87 |
| Frank Chiodo | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA87 |
| Matt Hinch | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA87 |
| Sara Allen | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA87 |
| Will Rogers | Iowa Nebraska Farm Equipment Dealers Association | Undecided | GA87 |
| Dan Kleen | Iowa Off -Highway Vehicle Association | Opposing | GA87 |
| Dan Kleen | Iowa Off -Highway Vehicle Association | Withdrawn | GA87 |
| Dan Kleen | Iowa Off -Highway Vehicle Association | Undecided | GA87 |
| Mike Heller | Iowa State Snowmobile Association | Undecided | GA87 |
| Paula Feltner | Iowa State Snowmobile Association | Undecided | GA87 |