| Sandra Conlin | Associated Builders & Contractors of Iowa | Opposing | GA88 |
| Scott Newhard | Associated General Contractors of Iowa | Opposing | GA88 |
| Carolann Jensen | Board of Regents, State of Iowa | Undecided | GA88 |
| Jennifer Harbison | Board of Regents, State of Iowa | Undecided | GA88 |
| Keith Saunders | Board of Regents, State of Iowa | Undecided | GA88 |
| Mary Braun | Board of Regents, State of Iowa | Undecided | GA88 |
| Thomas Jochum | Central Iowa Building Construction Trades Council | Supporting | GA88 |
| Maddie Wilcox | IBEW Iowa State Conference | Supporting | GA88 |
| Threase Harms | IBEW Iowa State Conference | Supporting | GA88 |
| Thomas Jochum | International Union of Operating Engineers-Local 234 | Supporting | GA88 |
| Michael McCarthy | Iowa Alliance For Retired Americans | Supporting | GA88 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Dustin Miller | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Katie Graham | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Supporting | GA88 |
| Julianne Frosolone | Iowa Federation of Labor, AFL-CIO | Supporting | GA88 |
| Brad Epperly | Iowa Geothermal Association | Undecided | GA88 |
| Dustin Miller | Iowa Geothermal Association | Undecided | GA88 |
| Katie Graham | Iowa Geothermal Association | Undecided | GA88 |
| Paula Dierenfeld | Iowa Geothermal Association | Undecided | GA88 |
| Alan Kemp | Iowa League of Cities | Undecided | GA88 |
| Daniel Stalder | Iowa League of Cities | Undecided | GA88 |
| Robert Palmer | Iowa League of Cities | Undecided | GA88 |
| Michael Gronstal | Iowa State Building and Construction Trades | Supporting | GA88 |
| Ben Hammes | Master Builders of Iowa | Opposing | GA88 |
| Chad Kleppe | Master Builders of Iowa | Opposing | GA88 |
| Julie Smith | Master Builders of Iowa | Opposing | GA88 |
| Charlotte Eby | North Central States Regional Council of Carpenters | Supporting | GA88 |
| Felicia Hilton | North Central States Regional Council of Carpenters | Supporting | GA88 |
| Taylor McDonald | North Central States Regional Council of Carpenters | Supporting | GA88 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| David Adelman | Sheet Metal Contractors of Iowa | Undecided | GA88 |
| Frank Chiodo | Sheet Metal Contractors of Iowa | Undecided | GA88 |
| Matt Hinch | Sheet Metal Contractors of Iowa | Undecided | GA88 |
| Sara Allen | Sheet Metal Contractors of Iowa | Undecided | GA88 |
| Kelli Harrison | UAW Region 4 | Supporting | GA88 |
| Courtney Craig | Windstream Communications Corporation | Undecided | GA88 |
| Robert Weiser | Windstream Communications Corporation | Undecided | GA88 |