| Terry Harrmann | Alliant Energy Corporation | Undecided | GA85 |
| Sandra Conlin | Associated Builders & Contractors of Iowa | Supporting | GA85 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA85 |
| Scott Sundstrom | Greater Des Moines Partnership | Undecided | GA85 |
| James Piazza, Jr. | Heavy Highway Contractors Association | Supporting | GA85 |
| Angela Davis | Home Builders Association of Iowa | Undecided | GA85 |
| Bill Wimmer | Home Builders Association of Iowa | Undecided | GA85 |
| Courtney Willits | IBEW Iowa State Conference | Supporting | GA85 |
| Kent Hartwig | IBEW Iowa State Conference | Supporting | GA85 |
| Threase Harms | IBEW Iowa State Conference | Supporting | GA85 |
| James Piazza, Jr. | International Union of Operating Engineers-Local 234 | Supporting | GA85 |
| Mike Heller | Iowa Academy of Trial Lawyers | Undecided | GA85 |
| Paula Feltner | Iowa Academy of Trial Lawyers | Undecided | GA85 |
| Michael Triplett | Iowa Alliance of Surety Companies | Opposing | GA85 |
| Michael Triplett | Iowa Alliance of Surety Companies | Undecided | GA85 |
| Kevin Condon | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA85 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA85 |
| John Stineman | Iowa Chamber Alliance | Undecided | GA85 |
| Scott Sundstrom | Iowa Chamber Alliance | Undecided | GA85 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Opposing | GA85 |
| Scott Sundstrom | Iowa Chapter, American Institute of Architects | Opposing | GA85 |
| Doug Struyk | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA85 |
| George Appleby | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA85 |
| Jennifer Tyler | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA85 |
| Jim Carney | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA85 |
| Brad Epperly | Iowa Defense Counsel Association | Undecided | GA85 |
| Scott Sundstrom | Iowa Defense Counsel Association | Undecided | GA85 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Supporting | GA85 |
| Angela Davis | Iowa Lumber Association | Undecided | GA85 |
| Bill Wimmer | Iowa Lumber Association | Undecided | GA85 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA85 |
| George Appleby | Iowa State Bar Association | Undecided | GA85 |
| Jennifer Tyler | Iowa State Bar Association | Undecided | GA85 |
| Jim Carney | Iowa State Bar Association | Undecided | GA85 |
| tom fey | Iowa State Building and Construction Trades Council | Supporting | GA85 |
| Michael Triplett | Iowans For Alternatives To Smoking And Tobacco | Undecided | GA85 |
| Chad Kleppe | Master Builders of Iowa | Undecided | GA85 |
| Marc Beltrame | Master Builders of Iowa | Undecided | GA85 |
| Matt McKinney | Master Builders of Iowa | Undecided | GA85 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Supporting | GA85 |
| Brian Johnson | NECA - Iowa (NEC) | Supporting | GA85 |
| Kristin Failor | National Federation of Independent Business (NFIB /IA) | Undecided | GA85 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Supporting | GA85 |
| Jon Murphy | Plumbers and Steam Fitters Local 33 | Supporting | GA85 |
| Justin Hupfer | Plumbers and Steam Fitters Local 33 | Supporting | GA85 |
| Mary Earnhardt | Plumbers and Steam Fitters Local 33 | Supporting | GA85 |
| David Adelman | Sheet Metal Contractors of Iowa | Supporting | GA85 |