| Sandra Conlin | Associated Builders & Contractors of Iowa | Opposing | GA85 |
| Susan Walter | Black Hills Energy | Undecided | GA85 |
| Thomas Jochum | Central Iowa Building Construction Trades Council | Opposing | 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 | Undecided | GA85 |
| Kent Hartwig | IBEW Iowa State Conference | Undecided | GA85 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA85 |
| Brice Oakley | Iowa Association of Community College Trustees (IACCT) | Undecided | GA85 |
| David Palmer | Iowa Association of Community College Trustees (IACCT) | Undecided | GA85 |
| Don Avenson | Iowa Association of Community College Trustees (IACCT) | Undecided | GA85 |
| Tom Cope | Iowa Association of Community College Trustees (IACCT) | Undecided | GA85 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Opposing | GA85 |
| Brad Epperly | Iowa Geothermal Association | Undecided | GA85 |
| Paula Dierenfeld | Iowa Geothermal Association | Undecided | GA85 |
| Scott Sundstrom | Iowa Geothermal Association | Undecided | GA85 |
| Brad Epperly | Iowa Propane Gas Association | Undecided | GA85 |
| Paula Dierenfeld | Iowa Propane Gas Association | Undecided | GA85 |
| Scott Sundstrom | Iowa Propane Gas Association | Undecided | GA85 |
| tom fey | Iowa State Building and Construction Trades Council | Opposing | GA85 |
| Brad Epperly | Iowa Water Well Association | Undecided | GA85 |
| Paula Dierenfeld | Iowa Water Well Association | Undecided | GA85 |
| Scott Sundstrom | Iowa Water Well Association | Undecided | GA85 |
| John Pederson | Lennox International | Undecided | GA85 |
| Matt Eide | Lennox International | 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) | Opposing | GA85 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA85 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Opposing | GA85 |
| Jon Murphy | Plumbers and Steam Fitters Local 33 | Opposing | GA85 |
| Justin Hupfer | Plumbers and Steam Fitters Local 33 | Opposing | GA85 |
| Mary Earnhardt | Plumbers and Steam Fitters Local 33 | Opposing | GA85 |
| David Adelman | Sheet Metal Contractors of Iowa | Opposing | GA85 |
| Mark Cooper | South Central Iowa Federation of Labor AFL-CIO | Opposing | GA85 |