| Sandra Conlin | Associated Builders & Contractors of Iowa | Supporting | GA86 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA86 |
| Thomas Jochum | Central Iowa Building Construction Trades Council | Undecided | GA86 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA86 |
| Paula Dierenfeld | Greater Des Moines Partnership | Undecided | GA86 |
| Scott Sundstrom | Greater Des Moines Partnership | Undecided | GA86 |
| James Piazza, Jr. | Heavy Highway Contractors Association | Undecided | GA86 |
| Jay Iverson | Home Builders Association of Iowa | Opposing | GA86 |
| Jake Oeth | IBEW Iowa State Conference | Supporting | GA86 |
| Kent Hartwig | IBEW Iowa State Conference | Supporting | GA86 |
| Threase Harms | IBEW Iowa State Conference | Supporting | GA86 |
| James Piazza, Jr. | International Union of Operating Engineers-Local 234 | Undecided | GA86 |
| Michael Triplett | Iowa Alliance of Surety Companies | Undecided | GA86 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Rachel Geilenfeld | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Zach Dalluge | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Robert Hartwig | Iowa Bankers Association | Undecided | GA86 |
| Sharon Presnall | Iowa Bankers Association | Undecided | GA86 |
| Mark Bowden | Iowa Board of Medicine | Withdrawn | GA86 |
| Mark Bowden | Iowa Board of Medicine | Undecided | GA86 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA86 |
| John Stineman | Iowa Chamber Alliance | Undecided | GA86 |
| Paula Dierenfeld | Iowa Chamber Alliance | Undecided | GA86 |
| Scott Sundstrom | Iowa Chamber Alliance | Undecided | GA86 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Undecided | GA86 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Undecided | GA86 |
| Scott Sundstrom | Iowa Chapter, American Institute of Architects | Undecided | GA86 |
| Doug Struyk | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA86 |
| George Appleby | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA86 |
| Jennifer Tyler | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA86 |
| Jim Carney | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA86 |
| Brad Epperly | Iowa Defense Counsel Association | Undecided | GA86 |
| Paula Dierenfeld | Iowa Defense Counsel Association | Undecided | GA86 |
| Scott Sundstrom | Iowa Defense Counsel Association | Undecided | GA86 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Undecided | GA86 |
| Emily Piper | Iowa Rural Water Association | Undecided | GA86 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA86 |
| George Appleby | Iowa State Bar Association | Undecided | GA86 |
| Jennifer Tyler | Iowa State Bar Association | Undecided | GA86 |
| Jim Carney | Iowa State Bar Association | Undecided | GA86 |
| Mike St. Clair | Iowa State Building and Construction Trades Council | Undecided | GA86 |
| tom fey | Iowa State Building and Construction Trades Council | Undecided | GA86 |
| Erich Schmidt | Laborers International Union of North America | Undecided | GA86 |
| Chad Kleppe | Master Builders of Iowa | Undecided | GA86 |
| David Adelman | Sheet Metal Contractors of Iowa | Supporting | GA86 |
| Mark Cooper | South Central Iowa Federation of Labor AFL-CIO | Undecided | GA86 |