| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA90 |
| Julie Smith | Coalition of Ignition Interlock Manufacturers | Supporting | GA90 |
| Matt McKinney | Coalition of Ignition Interlock Manufacturers | Supporting | GA90 |
| RG Schwarm | Coalition of Ignition Interlock Manufacturers | Supporting | GA90 |
| Andrew Mertens | Iowa Association for Justice | Undecided | GA90 |
| Andrew Mertens | Iowa Association for Justice | Opposing | GA90 |
| Lisa Davis-Cook | Iowa Association for Justice | Undecided | GA90 |
| Lisa Davis-Cook | Iowa Association for Justice | Opposing | GA90 |
| Amy Campbell | Iowa Behavioral Health Association (IBHA) | Undecided | GA90 |
| Chloe Gayer | Iowa Behavioral Health Association (IBHA) | Undecided | GA90 |
| Craig Patterson | Iowa Behavioral Health Association (IBHA) | Undecided | GA90 |
| Kelly Meyers | Iowa County Attorneys Association | Undecided | GA90 |
| Tom Ferguson | Iowa County Attorneys Association | Undecided | GA90 |
| Kellie Paschke | Iowa Peace Officers Association | Undecided | GA90 |
| Kelly Meyers | Iowa Peace Officers Association | Undecided | GA90 |
| Larry Murphy | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Undecided | GA90 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA90 |
| Jennifer Dorman | Iowa State Bar Association | Undecided | GA90 |
| Jim Carney | Iowa State Bar Association | Undecided | GA90 |
| Frank Harris | Mothers Against Drunk Driving | Supporting | GA90 |