| Tyler Raygor | Americans For Prosperity | Supporting | GA90 |
| Sandra Conlin | Associated Builders & Contractors of Iowa | Undecided | GA90 |
| Dane Schumann | Capitol Counsel, PLLC | Undecided | GA90 |
| Andy Conlin | Cicero Action | Supporting | GA90 |
| Dennis Tibben | Cicero Action | Supporting | GA90 |
| Casey Ficek | Delta Dental of Iowa | Undecided | GA90 |
| Josh Mandelbaum | Environmental Law and Policy Center | Undecided | GA90 |
| Steve Falck | Environmental Law and Policy Center | Undecided | GA90 |
| Mike Heller | Father Flanagans Boys Home | Undecided | GA90 |
| Molly Severn | Governor's Office | Supporting | GA90 |
| Nick Laning | IBEW Iowa State Conference | Opposing | GA90 |
| Nick Laning | IBEW Iowa State Conference | Undecided | GA90 |
| Threase Harms | IBEW Iowa State Conference | Opposing | GA90 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA90 |
| David Adelman | Iowa Academy of Family Physicians | Undecided | GA90 |
| Frank Chiodo | Iowa Academy of Family Physicians | Undecided | GA90 |
| Matt Hinch | Iowa Academy of Family Physicians | Undecided | GA90 |
| Paige Thorson | Iowa Academy of Family Physicians | Undecided | GA90 |
| Sara Allen | Iowa Academy of Family Physicians | Undecided | GA90 |
| Kellie Paschke | Iowa Association for Justice | Undecided | GA90 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Greta Haas | Iowa Association of Realtors | Undecided | GA90 |
| Jennifer Kingland | Iowa Association of Realtors | Undecided | GA90 |
| Carolann Jensen | Iowa Board of Regents | Undecided | GA90 |
| Jennifer Harbison | Iowa Board of Regents | Undecided | GA90 |
| Jillian Carlson | Iowa Board of Regents | Undecided | GA90 |
| Keith Saunders | Iowa Board of Regents | Undecided | GA90 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA90 |
| Angela Caulk | Iowa Chapter, American Institute of Architects | Undecided | GA90 |
| Christian Frankl | Iowa Chapter, American Institute of Architects | Undecided | GA90 |
| Logan Murray | Iowa Chapter, American Institute of Architects | Undecided | GA90 |
| Noah Tabor | Iowa Chapter, American Institute of Architects | Undecided | GA90 |
| Thomas Mayes | Iowa Department of Education | Supporting | GA90 |
| Sara Throener | Iowa Department of Inspections, Appeals, and Licensing | Undecided | GA90 |
| Deanna Triplett | Iowa Economic Development Authority | Undecided | GA90 |
| Chelsea Hoye | Iowa Environmental Council | Opposing | GA90 |
| Threase Harms | Iowa Environmental Council | Opposing | GA90 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Opposing | GA90 |
| Nichole Hansen | Iowa Finance Authority | Undecided | GA90 |
| Chelsea Hoye | Iowa Occupational Therapy Association | Undecided | GA90 |
| Nick Laning | Iowa Occupational Therapy Association | Undecided | GA90 |
| Threase Harms | Iowa Occupational Therapy Association | Undecided | GA90 |
| David Adelman | Iowa Osteopathic Medical Association | Undecided | GA90 |
| Frank Chiodo | Iowa Osteopathic Medical Association | Undecided | GA90 |
| Matt Hinch | Iowa Osteopathic Medical Association | Undecided | GA90 |
| Paige Thorson | Iowa Osteopathic Medical Association | Undecided | GA90 |
| Sara Allen | Iowa Osteopathic Medical Association | Undecided | GA90 |
| Mike Heller | Iowa Renewable Fuels Association (IRF) | Undecided | GA90 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA90 |
| Jennifer Dorman | Iowa State Bar Association | Undecided | GA90 |
| Jim Carney | Iowa State Bar Association | Undecided | GA90 |
| Louis Vander Streek | Iowa Utilities Commission | Undecided | GA90 |
| Maison Bleam | Iowa Utilities Commission | Undecided | GA90 |
| Doug Struyk | Iowa Veterinary Medical Association | Undecided | GA90 |
| Jennifer Dorman | Iowa Veterinary Medical Association | Undecided | GA90 |
| Jim Carney | Iowa Veterinary Medical Association | Undecided | GA90 |
| Megan Carlson | Iowa Veterinary Medical Association | Undecided | GA90 |
| Andy Conlin | Iowans for Tax Relief | Supporting | GA90 |
| Chris Hagenow | Iowans for Tax Relief | Supporting | GA90 |
| Jake Highfill | Iowans for Tax Relief | Supporting | GA90 |
| Tony Phillips | Iowans for Tax Relief | Supporting | GA90 |
| Victoria Sinclair | Land of the Free Action | Undecided | GA90 |
| Amy Campbell | League of Women Voters of Iowa | Undecided | GA90 |
| Chloe Gayer | League of Women Voters of Iowa | Undecided | GA90 |
| Craig Patterson | League of Women Voters of Iowa | Undecided | GA90 |
| Andy Conlin | Mackinac Center Action | Supporting | GA90 |
| Dennis Tibben | Mackinac Center Action | Supporting | GA90 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA90 |
| Kelly Meyers | Marion County Board of Supervisors | Undecided | GA90 |
| Dane Schumann | MedPharm Iowa | Undecided | GA90 |
| Onnalee Gettler | MidAmerican Energy Company | Undecided | GA90 |
| Ben Gentz | Missouri River Energy Services | Undecided | GA90 |
| Kate Walton | Missouri River Energy Services | Undecided | GA90 |
| Madeleine Bradley | Missouri River Energy Services | Undecided | GA90 |
| Matt Eide | Missouri River Energy Services | Undecided | GA90 |
| Dane Schumann | North Central States Regional Council of Carpenters | Undecided | GA90 |
| Andy Conlin | Opportunity Solutions Project | Supporting | GA90 |
| Dennis Tibben | Opportunity Solutions Project | Supporting | GA90 |
| Mike Heller | Petroleum Marketers Management Insurance Company (PMMIC) | Undecided | GA90 |
| David Adelman | UnityPoint Health | Undecided | GA90 |
| Frank Chiodo | UnityPoint Health | Undecided | GA90 |
| Matt Hinch | UnityPoint Health | Undecided | GA90 |
| Paige Thorson | UnityPoint Health | Undecided | GA90 |
| Sara Allen | UnityPoint Health | Undecided | GA90 |
| Mike Heller | Waste Management, Inc. | Undecided | GA90 |
| Brandon Geib | Wellmark, Inc. | Undecided | GA90 |
| Scott Sundstrom | Wellmark, Inc. | Undecided | GA90 |