| Drew Klein | Americans For Prosperity | Supporting | GA89 |
| Tyler Raygor | Americans For Prosperity | Supporting | GA89 |
| Sandra Conlin | Associated Builders & Contractors of Iowa | Undecided | GA89 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA89 |
| Jim Obradovich | Greater Des Moines Heating & Cooling Association | Undecided | GA89 |
| Jay Iverson | Home Builders Association of Iowa | Undecided | GA89 |
| Nick Laning | IBEW Iowa State Conference | Opposing | GA89 |
| Nick Laning | IBEW Iowa State Conference | Undecided | GA89 |
| Threase Harms | IBEW Iowa State Conference | Opposing | GA89 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA89 |
| Kellie Paschke | Iowa Association of Behavior Analysis | Undecided | GA89 |
| Kelly Meyers | Iowa Association of Behavior Analysis | Undecided | GA89 |
| Logan Murray | Iowa Association of Behavior Analysis | Undecided | GA89 |
| Troy Skinner | Iowa Association of Behavior Analysis | Undecided | GA89 |
| Jennifer Kingland | Iowa Association of Realtors | Undecided | GA89 |
| James Kersten | Iowa Central Community College | Undecided | GA89 |
| Hannah McDowell | Iowa Cosmetology School Association | Undecided | GA89 |
| Nick Laning | Iowa Cosmetology School Association | Undecided | GA89 |
| Rachel Ong | Iowa Cosmetology School Association | Undecided | GA89 |
| Threase Harms | Iowa Cosmetology School Association | Undecided | GA89 |
| Maddie Wilcox | Iowa Dept. of Public Health | Undecided | GA89 |
| Deanna Triplett | Iowa Economic Development Authority | Undecided | GA89 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Undecided | GA89 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Opposing | GA89 |
| Erin Cubit | Iowa Hospital Association | Undecided | GA89 |
| J. Norris | Iowa Hospital Association | Undecided | GA89 |
| Kim Murphy | Iowa Hospital Association | Undecided | GA89 |
| Maureen Keehnle | Iowa Hospital Association | Undecided | GA89 |
| Nicole Proesch | Iowa Hospital Association | Undecided | GA89 |
| Angela Davis | Iowa Lumber Association | Undecided | GA89 |
| Renee Schulte | Iowa Mental Health Counselors Association | Undecided | GA89 |
| Michael Gronstal | Iowa State Building and Construction Trades | Undecided | GA89 |
| Michael Gronstal | Iowa State Building and Construction Trades | Withdrawn | GA89 |
| Michael Gronstal | Iowa State Building and Construction Trades | Opposing | GA89 |
| Brooke Axiotis | Iowa Workforce Development | Supporting | GA89 |
| David Steen | Iowa Workforce Development | Supporting | GA89 |
| Jeffrey Koncsol | Iowa Workforce Development | Supporting | GA89 |
| Jon Peppetti | Iowa Workforce Development | Supporting | GA89 |
| Ryan West | Iowa Workforce Development | Supporting | GA89 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA89 |
| Justin Hupfer | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA89 |
| Brian Johnson | NECA - Iowa (NEC) | Undecided | GA89 |
| Justin Hupfer | NECA - Iowa (NEC) | Undecided | GA89 |
| Felicia Hilton | North Central States Regional Council of Carpenters | Undecided | GA89 |
| Felicia Hilton | North Central States Regional Council of Carpenters | Opposing | GA89 |
| Kevin McCarthy | North Central States Regional Council of Carpenters | Undecided | GA89 |
| Kevin McCarthy | North Central States Regional Council of Carpenters | Opposing | GA89 |
| Andy Conlin | Opportunity Solutions Project | Supporting | GA89 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Opposing | GA89 |
| Eric Goranson | Plumbing Heating & Cooling Contractors of IA | Undecided | GA89 |
| David Adelman | Sheet Metal Contractors of Iowa | Undecided | GA89 |
| Frank Chiodo | Sheet Metal Contractors of Iowa | Undecided | GA89 |
| Matt Hinch | Sheet Metal Contractors of Iowa | Undecided | GA89 |
| Sara Allen | Sheet Metal Contractors of Iowa | Undecided | GA89 |