| Brad Epperly | BNSF Railway Co. | Undecided | GA89 |
| Dustin Miller | BNSF Railway Co. | Undecided | GA89 |
| Brad Epperly | Bayer U.S. LLC | Undecided | GA89 |
| Dustin Miller | Bayer U.S. LLC | Undecided | GA89 |
| Carolann Jensen | Board of Regents, State of Iowa | Undecided | GA89 |
| Jennifer Harbison | Board of Regents, State of Iowa | Undecided | GA89 |
| Keith Saunders | Board of Regents, State of Iowa | Undecided | GA89 |
| Mary Braun | Board of Regents, State of Iowa | Undecided | GA89 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA89 |
| Brad Epperly | Helena Agri-Enterprises, LLC | Undecided | GA89 |
| Dustin Miller | Helena Agri-Enterprises, LLC | Undecided | GA89 |
| Nick Laning | IBEW Iowa State Conference | Undecided | GA89 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA89 |
| Michael McCarthy | Iowa Alliance For Retired Americans | Undecided | GA89 |
| Brad Lint | Iowa Association for Justice | Undecided | GA89 |
| Kellie Paschke | Iowa Association for Justice | Undecided | GA89 |
| Lisa Davis-Cook | Iowa Association for Justice | Undecided | GA89 |
| Troy Skinner | Iowa Association for Justice | Undecided | GA89 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Opposing | GA89 |
| John Davis | Iowa Association of Business and Industry (ABI) | Opposing | GA89 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Opposing | GA89 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Opposing | GA89 |
| Steffi Lee | Iowa Association of Business and Industry (ABI) | Opposing | GA89 |
| Brad Epperly | Iowa Automobile Dealers Association | Undecided | GA89 |
| Dustin Miller | Iowa Automobile Dealers Association | Undecided | GA89 |
| Brad Epperly | Iowa Collectors Association, Inc. | Undecided | GA89 |
| Dustin Miller | Iowa Collectors Association, Inc. | Undecided | GA89 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Undecided | GA89 |
| Brad Epperly | Iowa Grocery Industry Association | Undecided | GA89 |
| Dustin Miller | Iowa Grocery Industry Association | Undecided | GA89 |
| Alan Kemp | Iowa Municipalities Workers' Compensation Association | Undecided | GA89 |
| Daniel Stalder | Iowa Municipalities Workers' Compensation Association | Undecided | GA89 |
| Robert Palmer | Iowa Municipalities Workers' Compensation Association | Undecided | GA89 |
| Christopher Rants | Iowa Prosthetics, Orthotics, Pedorthotics Association | Supporting | GA89 |
| John Cacciatore | Iowa Prosthetics, Orthotics, Pedorthotics Association | Supporting | GA89 |
| Justin Hupfer | Iowa Prosthetics, Orthotics, Pedorthotics Association | Supporting | GA89 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA89 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA89 |
| Doug Struyk | Iowa State Bar Association | Supporting | GA89 |
| Jennifer Dorman | Iowa State Bar Association | Supporting | GA89 |
| Jim Carney | Iowa State Bar Association | Supporting | GA89 |
| Dane Schumann | North Central States Regional Council of Carpenters | Undecided | GA89 |
| Brian Johnson | Personal Interest-Brian Johnson | Supporting | GA89 |
| Jim Romar | Teamsters Local 238 | Supporting | GA89 |