| Morgan Miller | AFSCME Iowa Council 61 | Opposing | GA88 |
| Troy Price | AFSCME Iowa Council 61 | Opposing | GA88 |
| Julie Vande Hoef | Alliant Energy Corporation | Supporting | GA88 |
| Daniel Zeno | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | GA88 |
| Mark Stringer | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | GA88 |
| Pete McRoberts | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | GA88 |
| Rita Bettis Austen | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | GA88 |
| Kate Walton | Arconic (Formerly Alcoa) | Undecided | GA88 |
| Matt Eide | Arconic (Formerly Alcoa) | Undecided | GA88 |
| Kate Walton | Association of Early Childhood Iowa Area Boards and Advocates | Undecided | GA88 |
| Matt Eide | Association of Early Childhood Iowa Area Boards and Advocates | Undecided | GA88 |
| Dale Woolery | Governors Office of Drug Control Policy | Undecided | GA88 |
| Susie Sher | Governors Office of Drug Control Policy | Undecided | GA88 |
| Maddie Wilcox | IBEW Iowa State Conference | Opposing | GA88 |
| Maddie Wilcox | IBEW Iowa State Conference | Undecided | GA88 |
| Threase Harms | IBEW Iowa State Conference | Opposing | GA88 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA88 |
| Michael McCarthy | Iowa Alliance For Retired Americans | Opposing | GA88 |
| Brad Lint | Iowa Association for Justice | Opposing | GA88 |
| Lisa Davis-Cook | Iowa Association for Justice | Opposing | GA88 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| Amy Campbell | Iowa Behavioral Health Association (IBHA) | Undecided | GA88 |
| Craig Patterson | Iowa Behavioral Health Association (IBHA) | Undecided | GA88 |
| Kelly Meyers | Iowa County Attorneys Association | Undecided | GA88 |
| Susan Cameron Daemen | Iowa County Attorneys Association | Undecided | GA88 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Opposing | GA88 |
| Julianne Frosolone | Iowa Federation of Labor, AFL-CIO | Opposing | GA88 |
| Tiffany Carter | Iowa Harm Reduction Coalition | Undecided | GA88 |
| Alan Kemp | Iowa League of Cities | Supporting | GA88 |
| Daniel Stalder | Iowa League of Cities | Supporting | GA88 |
| Robert Palmer | Iowa League of Cities | Supporting | GA88 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA88 |
| Jennifer Dorman | Iowa State Bar Association | Undecided | GA88 |
| Jim Carney | Iowa State Bar Association | Undecided | GA88 |
| Michael Gronstal | Iowa State Building and Construction Trades | Opposing | GA88 |
| Ben Hammes | Master Builders of Iowa | Supporting | GA88 |
| Julie Smith | Master Builders of Iowa | Supporting | GA88 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA88 |