| Melissa Speed | AFSCME Iowa Council 61 | Opposing | GA90 |
| Drew Klein | Americans For Prosperity | Supporting | GA90 |
| Tyler Raygor | Americans For Prosperity | Supporting | GA90 |
| Connie Ryan | Interfaith Alliance of Iowa Action Fund | Opposing | GA90 |
| Mike Heller | Iowa Academy of Trial Lawyers | Opposing | GA90 |
| Brad Lint | Iowa Association for Justice | Opposing | GA90 |
| Kellie Paschke | Iowa Association for Justice | Opposing | GA90 |
| Lisa Davis-Cook | Iowa Association for Justice | Opposing | GA90 |
| Troy Skinner | Iowa Association for Justice | Opposing | GA90 |
| Mike Heller | Iowa Association of Magistrate Judges | Opposing | GA90 |
| Robert Cook | Iowa Atheists and Freethinkers | Opposing | GA90 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA90 |
| Brad Epperly | Iowa Defense Counsel Association | Opposing | GA90 |
| Brad Epperly | Iowa Defense Counsel Association | Undecided | GA90 |
| Dustin Miller | Iowa Defense Counsel Association | Opposing | GA90 |
| Dustin Miller | Iowa Defense Counsel Association | Undecided | GA90 |
| Jeff Pitts | Iowa Faith and Freedom Coalition | Supporting | GA90 |
| Jeff Pitts | Iowa Faith and Freedom Coalition | Undecided | GA90 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Opposing | GA90 |
| BRITTANY LUMLEY | Iowa Judges Association | Opposing | GA90 |
| Taylor McDonald | Iowa Judges Association | Opposing | GA90 |
| Amber Shanahan-Fricke | Iowa Judicial Branch - Supreme Court | Opposing | GA90 |
| Caitlin Jarzen | Iowa Judicial Branch - Supreme Court | Opposing | GA90 |
| Molly Kottmeyer | Iowa Judicial Branch - Supreme Court | Opposing | GA90 |
| Doug Struyk | Iowa State Bar Association | Opposing | GA90 |
| Jennifer Dorman | Iowa State Bar Association | Opposing | GA90 |
| Jim Carney | Iowa State Bar Association | Opposing | GA90 |
| Kellie Paschke | Justice Not Politics | Opposing | GA90 |
| Kelly Meyers | Justice Not Politics | Opposing | GA90 |
| Troy Skinner | Justice Not Politics | Opposing | GA90 |
| Karl Schilling | United Professionals/UE | Opposing | GA90 |