| David Scott | American Council of Engineering Companies | Undecided | GA90 |
| Sandra Conlin | Associated Builders & Contractors of Iowa | Undecided | GA90 |
| Scott Newhard | Associated General Contractors of Iowa | Undecided | GA90 |
| Nick Laning | IBEW Iowa State Conference | Undecided | GA90 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA90 |
| Michael Triplett | Iowa Alliance of Surety Companies | Undecided | GA90 |
| Carolann Jensen | Iowa Board of Regents | Undecided | GA90 |
| Jennifer Harbison | Iowa Board of Regents | Undecided | GA90 |
| Keith Saunders | Iowa Board of Regents | Undecided | GA90 |
| Mary Braun | Iowa Board of Regents | Undecided | GA90 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA90 |
| Dustin Miller | Iowa Chamber Alliance | Undecided | GA90 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Undecided | GA90 |
| Dustin Miller | Iowa Chapter, American Institute of Architects | Undecided | GA90 |
| Doug Struyk | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA90 |
| Jennifer Dorman | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA90 |
| Jim Carney | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA90 |
| John Hall | Marshalltown Area Chamber of Commerce | Undecided | GA90 |
| Ben Hammes | Master Builders of Iowa | Opposing | GA90 |
| Julie Smith | Master Builders of Iowa | Opposing | GA90 |
| Christopher Rants | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA90 |
| Justin Hupfer | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA90 |
| Christopher Rants | NECA - Iowa (NEC) | Undecided | GA90 |
| Justin Hupfer | NECA - Iowa (NEC) | Undecided | GA90 |
| Christopher Rants | Plumbers and Steam Fitters Local 33 | Undecided | GA90 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Undecided | GA90 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA90 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA90 |