| Sandra Conlin | Associated Builders & Contractors of Iowa | Opposing | GA89 |
| Scott Newhard | Associated General Contractors of Iowa | Opposing | 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 |
| Ryan Sempf | Dubuque Area Chamber of Commerce | Undecided | GA89 |
| James Piazza, Jr. | Heavy Highway Contractors Association | Undecided | GA89 |
| Nick Laning | IBEW Iowa State Conference | Supporting | GA89 |
| Nick Laning | IBEW Iowa State Conference | Undecided | GA89 |
| Threase Harms | IBEW Iowa State Conference | Supporting | GA89 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA89 |
| Jake Ketzner | Independent Insurance Agents of Iowa | Undecided | GA89 |
| Larry Blixt | Independent Insurance Agents of Iowa | Undecided | GA89 |
| Thomas O'Meara | Independent Insurance Agents of Iowa | Undecided | GA89 |
| Jim Obradovich | Iowa Association of Building Officials | Undecided | GA89 |
| Robert Mulqueen | Iowa Association of Building Officials | Undecided | GA89 |
| Emily Shields | Iowa Association of Community College Trustees | Undecided | GA89 |
| Jeff Smith | Iowa Association of Community College Trustees | Undecided | GA89 |
| Jerry Fitzgerald | Iowa Association of Community College Trustees | Undecided | GA89 |
| Maggie Smith-Fitzgerald | Iowa Association of Community College Trustees | Undecided | GA89 |
| Matt Fitzgerald | Iowa Association of Community College Trustees | Undecided | GA89 |
| Nathan Blake | Iowa Attorney General Dept. of Justice | Supporting | GA89 |
| James Kersten | Iowa Central Community College | Undecided | GA89 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Undecided | GA89 |
| Doug Struyk | Iowa Competitive Bidding Alliance, Inc. | Opposing | GA89 |
| Jennifer Dorman | Iowa Competitive Bidding Alliance, Inc. | Opposing | GA89 |
| Jim Carney | Iowa Competitive Bidding Alliance, Inc. | Opposing | GA89 |
| Kelly Meyers | Iowa County Attorneys Association | Supporting | GA89 |
| Sara Throener | Iowa Dept. of Inspections and Appeals | Undecided | GA89 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Supporting | GA89 |
| Alan Kemp | Iowa League of Cities | Undecided | GA89 |
| Daniel Stalder | Iowa League of Cities | Undecided | GA89 |
| Robert Palmer | Iowa League of Cities | Undecided | GA89 |
| Michael Gronstal | Iowa State Building and Construction Trades | Supporting | GA89 |
| Dylan Gramlich | Laborers International Union of North America | Supporting | GA89 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA89 |
| Kelly Meyers | Marion County Board of Supervisors | Undecided | GA89 |
| Logan Murray | Marion County Board of Supervisors | Undecided | GA89 |
| Troy Skinner | Marion County Board of Supervisors | Undecided | GA89 |
| Ben Hammes | Master Builders of Iowa | Opposing | GA89 |
| Julie Smith | Master Builders of Iowa | Opposing | GA89 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA89 |
| Justin Hupfer | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA89 |
| Brian Johnson | NECA - Iowa (NEC) | Undecided | GA89 |
| Justin Hupfer | NECA - Iowa (NEC) | Undecided | GA89 |
| Felicia Hilton | North Central States Regional Council of Carpenters | Supporting | GA89 |
| Kevin McCarthy | North Central States Regional Council of Carpenters | Supporting | GA89 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Supporting | GA89 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA89 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA89 |
| David Adelman | Sheet Metal Contractors of Iowa | Undecided | GA89 |
| Frank Chiodo | Sheet Metal Contractors of Iowa | Undecided | GA89 |
| Matt Hinch | Sheet Metal Contractors of Iowa | Undecided | GA89 |
| Sara Allen | Sheet Metal Contractors of Iowa | Undecided | GA89 |
| Jim Romar | Teamsters Local 238 | Supporting | GA89 |
| Kelli Harrison | UAW Region 4 | Supporting | GA89 |
| Karl Schilling | United Professionals/UE | Supporting | GA89 |