| Melissa Speed | AFSCME Council 61 | Opposing | GA91 |
| Dustin Rush | Americans For Prosperity | Supporting | GA91 |
| Tyler Raygor | Americans For Prosperity | Supporting | GA91 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA91 |
| Gary Grant | City of Cedar Rapids | Undecided | GA91 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA91 |
| Doug Struyk | City of Des Moines | Undecided | GA91 |
| Emilee Harris-Puricelli | City of Des Moines | Undecided | GA91 |
| Jen Schulte | City of Des Moines | Undecided | GA91 |
| Jennifer Dorman | City of Des Moines | Undecided | GA91 |
| Jim Carney | City of Des Moines | Undecided | GA91 |
| Nick Laning | IBEW Iowa State Conference | Opposing | GA91 |
| Threase Harms | IBEW Iowa State Conference | Opposing | GA91 |
| Emily Piper | Iowa Association of School Boards | Undecided | GA91 |
| Michelle Johnson | Iowa Association of School Boards | Undecided | GA91 |
| Carolann Jensen | Iowa Board of Regents | Undecided | GA91 |
| Jennifer Harbison | Iowa Board of Regents | Undecided | GA91 |
| Jillian Carlson | Iowa Board of Regents | Undecided | GA91 |
| Keith Saunders | Iowa Board of Regents | Undecided | GA91 |
| Sara Throener | Iowa Department of Inspections, Appeals, and Licensing | Undecided | GA91 |
| Sarah Vanderploeg | Iowa Department of Inspections, Appeals, and Licensing | Undecided | GA91 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Opposing | GA91 |
| Chelsea Hoye | Iowa League of Cities | Undecided | GA91 |
| Cody Carlson | Iowa League of Cities | Undecided | GA91 |
| Kellie Paschke | Iowa Peace Officers Association | Opposing | GA91 |
| Larry Murphy | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Undecided | GA91 |
| John Cacciatore | Iowa Professional Fire Fighters | Undecided | GA91 |
| Lon Anderson | Iowa Professional Fire Fighters | Undecided | GA91 |
| Andrea Woodard | Iowa State Association of Counties | Undecided | GA91 |
| Beth Manley | Iowa State Association of Counties | Undecided | GA91 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA91 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA91 |
| Kellie Paschke | Iowa State Education Association | Opposing | GA91 |
| Kelly Meyers | Iowa State Education Association | Opposing | GA91 |
| Melissa Peterson | Iowa State Education Association | Opposing | GA91 |
| Morgan Miller | Iowa State Education Association | Opposing | GA91 |
| Jeff Smith | Iowa State Police Association | Undecided | GA91 |
| Maggie Smith-Fitzgerald | Iowa State Police Association | Undecided | GA91 |
| Matt Fitzgerald | Iowa State Police Association | Undecided | GA91 |
| Dylan Gramlich | Laborers International Union of North America | Opposing | GA91 |
| Gary Grant | Linn County Board of Supervisors | Opposing | GA91 |
| Gary Grant | Linn County Board of Supervisors | Withdrawn | GA91 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA91 |
| Larry Murphy | Linn County Board of Supervisors | Opposing | GA91 |
| Larry Murphy | Linn County Board of Supervisors | Withdrawn | GA91 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA91 |
| Andy Conlin | Mackinac Center Action | Supporting | GA91 |
| Dennis Tibben | Mackinac Center Action | Supporting | GA91 |
| Sandra Conlin | Mackinac Center Action | Supporting | GA91 |
| Dane Schumann | Mid-American Carpenters Regional Council | Opposing | GA91 |
| Nathaniel Arnold | Professional Educators of Iowa | Supporting | GA91 |
| Nathaniel Arnold | Professional Educators of Iowa | Undecided | GA91 |
| Dave Daughton | Rural School Advocates of Iowa | Undecided | GA91 |
| Margaret Buckton | Rural School Advocates of Iowa | Undecided | GA91 |
| Dave Daughton | School Administrators of Iowa | Undecided | GA91 |
| John Cacciatore | State Police Officers Council | Undecided | GA91 |
| Tamara Marcus | Teamsters Local 238 | Opposing | GA91 |
| Karl Schilling | United Professionals/UE | Opposing | GA91 |
| Gary Grant | Urban County Coalition | Undecided | GA91 |
| Larry Murphy | Urban County Coalition | Undecided | GA91 |
| Margaret Buckton | Urban Education Network of Iowa | Undecided | GA91 |