| Bernard Lettington | Animal Rescue League Iowa, Inc. | Supporting | GA90 |
| Dane Schumann | Dog Daycare Coalition | Undecided | GA90 |
| Andrew Mertens | Iowa Association for Justice | Undecided | GA90 |
| Lisa Davis-Cook | Iowa Association for Justice | Undecided | GA90 |
| Brad Cranston | Iowa Baptists For Biblical Values | Supporting | GA90 |
| Kelly Meyers | Iowa County Attorneys Association | Supporting | GA90 |
| Tom Ferguson | Iowa County Attorneys Association | Supporting | GA90 |
| Jeff Pitts | Iowa Faith and Freedom Coalition | Supporting | GA90 |
| Larry Murphy | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Undecided | GA90 |
| Doug Struyk | Iowa State Bar Association | Supporting | GA90 |
| Jennifer Dorman | Iowa State Bar Association | Supporting | GA90 |
| Jim Carney | Iowa State Bar Association | Supporting | GA90 |
| Doug Struyk | Iowa Veterinary Medical Association | Supporting | GA90 |
| Jennifer Dorman | Iowa Veterinary Medical Association | Supporting | GA90 |
| Jim Carney | Iowa Veterinary Medical Association | Supporting | GA90 |
| Megan Carlson | Iowa Veterinary Medical Association | Supporting | GA90 |
| Angela Caulk | The Humane Society of the United States | Supporting | GA90 |
| Christian Frankl | The Humane Society of the United States | Supporting | GA90 |
| Logan Murray | The Humane Society of the United States | Supporting | GA90 |
| Noah Tabor | The Humane Society of the United States | Supporting | GA90 |
| Preston Moore | The Humane Society of the United States | Supporting | GA90 |