| Alex Drzycimski | AFSCME Iowa Council 61 | Opposing | GA87 |
| Morgan Miller | AFSCME Iowa Council 61 | Opposing | GA87 |
| David Scott | American Council of Engineering Companies | Supporting | GA87 |
| Scott Newhard | Associated General Contractors of Iowa | Supporting | GA87 |
| Bruce Rastetter | Board of Regents, State of Iowa | Opposing | GA87 |
| Bruce Rastetter | Board of Regents, State of Iowa | Undecided | GA87 |
| Katie Mulholland | Board of Regents, State of Iowa | Opposing | GA87 |
| Katie Mulholland | Board of Regents, State of Iowa | Undecided | GA87 |
| Keith Saunders | Board of Regents, State of Iowa | Opposing | GA87 |
| Keith Saunders | Board of Regents, State of Iowa | Undecided | GA87 |
| Kristin Failor | Board of Regents, State of Iowa | Opposing | GA87 |
| Kristin Failor | Board of Regents, State of Iowa | Undecided | GA87 |
| Mary Braun | Board of Regents, State of Iowa | Opposing | GA87 |
| Mary Braun | Board of Regents, State of Iowa | Undecided | GA87 |
| Robert Donley | Board of Regents, State of Iowa | Opposing | GA87 |
| Robert Donley | Board of Regents, State of Iowa | Undecided | GA87 |
| Thomas Jochum | Central Iowa Building Construction Trades Council | Opposing | GA87 |
| Christopher Rants | Design Build Institute of America - Mid-American Region c/o MultiState Associate | Opposing | GA87 |
| John Cacciatore | Design Build Institute of America - Mid-American Region c/o MultiState Associate | Opposing | GA87 |
| Jay Iverson | Home Builders Association of Iowa | Supporting | GA87 |
| Connor Slack | IBEW Iowa State Conference | Undecided | GA87 |
| Dane Schumann | IBEW Iowa State Conference | Undecided | GA87 |
| Emily Hockins | IBEW Iowa State Conference | Undecided | GA87 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA87 |
| James Piazza, Jr. | International Union of Operating Engineers-Local 234 | Opposing | GA87 |
| Michael Triplett | Iowa Alliance of Surety Companies | Undecided | GA87 |
| David Palmer | Iowa Association of Community College Trustees (IACCT) | Undecided | GA87 |
| Donna Orton | Iowa Association of Community College Trustees (IACCT) | Undecided | GA87 |
| Emily Shields | Iowa Association of Community College Trustees (IACCT) | Undecided | GA87 |
| Laurie Wolf | Iowa Association of Community College Trustees (IACCT) | Undecided | GA87 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Supporting | GA87 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Undecided | GA87 |
| Dustin Miller | Iowa Chapter, American Institute of Architects | Supporting | GA87 |
| Dustin Miller | Iowa Chapter, American Institute of Architects | Undecided | GA87 |
| Paige Thorson | Iowa Chapter, American Institute of Architects | Supporting | GA87 |
| Paige Thorson | Iowa Chapter, American Institute of Architects | Undecided | GA87 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Supporting | GA87 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Undecided | GA87 |
| Doug Struyk | Iowa Competitive Bidding Alliance, Inc. | Supporting | GA87 |
| Jim Carney | Iowa Competitive Bidding Alliance, Inc. | Supporting | GA87 |
| Shannon Henson | Iowa Competitive Bidding Alliance, Inc. | Supporting | GA87 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Opposing | GA87 |
| J. Norris | Iowa Hospital Association | Undecided | GA87 |
| Kim Murphy | Iowa Hospital Association | Undecided | GA87 |
| Maureen Keehnle | Iowa Hospital Association | Undecided | GA87 |
| Natalie Ginty | Iowa Hospital Association | Undecided | GA87 |
| Alan Kemp | Iowa League of Cities | Undecided | GA87 |
| Lindsey McCune | Iowa League of Cities | Undecided | GA87 |
| Robert Palmer | Iowa League of Cities | Undecided | GA87 |
| Mike St. Clair | Iowa State Building and Construction Trades Council | Opposing | GA87 |
| tom fey | Iowa State Building and Construction Trades Council | Opposing | GA87 |
| tom fey | Iowa State Building and Construction Trades Council | Withdrawn | GA87 |
| tom fey | Iowa State Building and Construction Trades Council | Supporting | GA87 |
| Christopher Rants | JE Dunn Construction c/o MultiState Associates Inc. | Opposing | GA87 |
| John Cacciatore | JE Dunn Construction c/o MultiState Associates Inc. | Opposing | GA87 |
| Chad Kleppe | Master Builders of Iowa | Undecided | GA87 |
| Julie Smith | Master Builders of Iowa | Undecided | GA87 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Opposing | GA87 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA87 |
| Craig Walter | Mechanical Contractors Association of Iowa (MCAI) | Opposing | GA87 |
| Brian Johnson | NECA - Iowa (NEC) | Opposing | GA87 |
| Brian Johnson | NECA - Iowa (NEC) | Undecided | GA87 |
| Craig Walter | NECA - Iowa (NEC) | Opposing | GA87 |
| Christopher Rants | Plumbers and Steam Fitters Local 33 | Opposing | GA87 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Opposing | GA87 |