| Bernard Lettington | Animal Rescue League Iowa, Inc. | Supporting | GA90 |
| Bernard Lettington | Animal Rescue League Iowa, Inc. | Undecided | GA90 |
| David McDonald | Cedar Rapids Kennel Association | Undecided | GA90 |
| Brad Lint | Iowa Association for Justice | Undecided | GA90 |
| Lisa Davis-Cook | Iowa Association for Justice | Withdrawn | GA90 |
| Lisa Davis-Cook | Iowa Association for Justice | Undecided | GA90 |
| Carolann Jensen | Iowa Board of Regents | Undecided | GA90 |
| Jennifer Harbison | Iowa Board of Regents | Undecided | GA90 |
| Keith Saunders | Iowa Board of Regents | Undecided | GA90 |
| Mary Braun | Iowa Board of Regents | Undecided | 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 |
| Jefferson Fink | Iowa Conservation Alliance | Undecided | GA90 |
| Jim Obradovich | Iowa Conservation Alliance | Undecided | GA90 |
| Jefferson Fink | Iowa Coon Hunters Association | Undecided | GA90 |
| Jim Obradovich | Iowa Coon Hunters Association | Undecided | GA90 |
| Haley Hook | Iowa Department of Agriculture & Land Stewardship | Undecided | GA90 |
| Kevin Kuhle | Iowa Farm Bureau Federation | Undecided | GA90 |
| Matt Gronewald | Iowa Farm Bureau Federation | Undecided | GA90 |
| Matthew Steinfeldt | Iowa Farm Bureau Federation | Undecided | GA90 |
| Jill Altringer | Iowa Federation of Animal Owners | Undecided | GA90 |
| Ben Nuelle | Iowa Pork Producers Association | Undecided | GA90 |
| Jeff Smith | Iowa Pork Producers Association | Undecided | GA90 |
| Maggie Smith-Fitzgerald | Iowa Pork Producers Association | Undecided | GA90 |
| Matt Fitzgerald | Iowa Pork Producers Association | Undecided | GA90 |
| Jill Altringer | Iowa State Dairy Association | Undecided | GA90 |
| Jefferson Fink | Iowa Trappers Association | Undecided | GA90 |
| Jim Obradovich | Iowa Trappers Association | Undecided | 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 |
| Angela Caulk | The Humane Society of the United States | Undecided | GA90 |
| Kole Pederson | The Humane Society of the United States | Undecided | GA90 |
| Logan Murray | The Humane Society of the United States | Undecided | GA90 |
| Noah Tabor | The Humane Society of the United States | Undecided | GA90 |