| Sandra Conlin | Associated Builders & Contractors of Iowa | Supporting | GA86 |
| Bruce Rastetter | Board of Regents, State of Iowa | Undecided | GA86 |
| Joe Murphy | Board of Regents, State of Iowa | Undecided | GA86 |
| Katie Mulholland | Board of Regents, State of Iowa | Undecided | GA86 |
| Keith Saunders | Board of Regents, State of Iowa | Undecided | GA86 |
| Mary Braun | Board of Regents, State of Iowa | Undecided | GA86 |
| Robert Donley | Board of Regents, State of Iowa | Undecided | GA86 |
| Caleb Hunter | Department of Administrative Services (DAS) | 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 |
| Jay Iverson | Home Builders Association of Iowa | Supporting | GA86 |
| James Piazza, Jr. | International Union of Operating Engineers-Local 234 | Opposing | 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 |
| Emily Piper | Iowa Association of School Boards | Undecided | GA86 |
| Phil Jeneary | Iowa Association of School Boards | 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 | Supporting | GA86 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Undecided | GA86 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Supporting | GA86 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Undecided | GA86 |
| Scott Sundstrom | Iowa Chapter, American Institute of Architects | Supporting | GA86 |
| Scott Sundstrom | Iowa Chapter, American Institute of Architects | Undecided | GA86 |
| Brice Oakley | Iowa Chapter, American Society of Landscape Architects | Undecided | GA86 |
| Don Avenson | Iowa Chapter, American Society of Landscape Architects | Undecided | GA86 |
| Tom Cope | Iowa Chapter, American Society of Landscape Architects | Undecided | GA86 |
| Doug Struyk | Iowa Competitive Bidding Alliance, Inc. | Supporting | GA86 |
| George Appleby | Iowa Competitive Bidding Alliance, Inc. | Supporting | GA86 |
| Jennifer Tyler | Iowa Competitive Bidding Alliance, Inc. | Supporting | GA86 |
| Jim Carney | Iowa Competitive Bidding Alliance, Inc. | Supporting | GA86 |
| Mikel Derby | Iowa Dept. of Transportation | Undecided | GA86 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Opposing | GA86 |
| Mike St. Clair | Iowa State Building and Construction Trades Council | Opposing | GA86 |
| tom fey | Iowa State Building and Construction Trades Council | Opposing | GA86 |
| tom fey | Iowa State Building and Construction Trades Council | Withdrawn | GA86 |
| tom fey | Iowa State Building and Construction Trades Council | Supporting | GA86 |
| Erich Schmidt | Laborers International Union of North America | Opposing | GA86 |
| Chad Kleppe | Master Builders of Iowa | Supporting | GA86 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Opposing | GA86 |