| Alex Drzycimski | AFSCME Iowa Council 61 | Opposing | GA86 |
| Marcia Nichols | AFSCME Iowa Council 61 | Opposing | GA86 |
| Morgan Miller | AFSCME Iowa Council 61 | Opposing | GA86 |
| Brad Epperly | AIG-American International Companies | Undecided | GA86 |
| Paula Dierenfeld | AIG-American International Companies | Undecided | GA86 |
| Scott Sundstrom | AIG-American International Companies | Undecided | GA86 |
| David Scott | American Council of Engineering Companies | Supporting | GA86 |
| Brad Epperly | American Insurance Association | Supporting | GA86 |
| Brad Epperly | American Insurance Association | Undecided | GA86 |
| Paula Dierenfeld | American Insurance Association | Supporting | GA86 |
| Paula Dierenfeld | American Insurance Association | Undecided | GA86 |
| Scott Sundstrom | American Insurance Association | Supporting | GA86 |
| Scott Sundstrom | American Insurance Association | Undecided | GA86 |
| Sandra Conlin | Associated Builders & Contractors of Iowa | Supporting | GA86 |
| Scott Newhard | Associated General Contractors of Iowa | Supporting | GA86 |
| Thomas Jochum | Central Iowa Building Construction Trades Council | Undecided | GA86 |
| Creighton Cox | Developers Council of Greater Des Moines | Supporting | GA86 |
| Michael Triplett | Greater Iowa Apartment Association | Supporting | GA86 |
| Michael Triplett | Greater Iowa Apartment Association | Withdrawn | GA86 |
| Michael Triplett | Greater Iowa Apartment Association | Undecided | GA86 |
| James Piazza, Jr. | Heavy Highway Contractors Association | Supporting | GA86 |
| James Piazza, Jr. | Heavy Highway Contractors Association | Undecided | GA86 |
| Creighton Cox | Home Builders Association of Greater Des Moines | Supporting | GA86 |
| Creighton Cox | Home Builders Association of Iowa | Undecided | GA86 |
| Jay Iverson | Home Builders Association of Iowa | Supporting | GA86 |
| David Adelman | Hubbell Realty Company | Supporting | GA86 |
| Bob Skow | Independent Insurance Agents of Iowa | Supporting | GA86 |
| Larry Blixt | Independent Insurance Agents of Iowa | Supporting | GA86 |
| James Piazza, Jr. | International Union of Operating Engineers-Local 234 | Undecided | GA86 |
| Mike Heller | Iowa Academy of Trial Lawyers | Opposing | GA86 |
| Paula Feltner | Iowa Academy of Trial Lawyers | Opposing | GA86 |
| Michael Triplett | Iowa Alliance of Surety Companies | Supporting | GA86 |
| Angela Davis | Iowa Association for Justice | Opposing | GA86 |
| Bill Wimmer | Iowa Association for Justice | Opposing | GA86 |
| Brad Lint | Iowa Association for Justice | Opposing | GA86 |
| Lisa Davis-Cook | Iowa Association for Justice | Opposing | 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 |
| Jennifer Kingland | Iowa Association of Realtors | Supporting | GA86 |
| Emily Piper | Iowa Association of School Boards | Opposing | GA86 |
| Phil Jeneary | Iowa Association of School Boards | Opposing | GA86 |
| William Brauch | Iowa Attorney General Dept. of Justice | Undecided | GA86 |
| Robert Hartwig | Iowa Bankers Association | Undecided | GA86 |
| Sharon Presnall | Iowa Bankers Association | Undecided | GA86 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Supporting | GA86 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Supporting | GA86 |
| Scott Sundstrom | Iowa Chapter, American Institute of Architects | Supporting | GA86 |
| Brice Oakley | Iowa Chapter, American Society of Landscape Architects | Supporting | GA86 |
| Brice Oakley | Iowa Chapter, American Society of Landscape Architects | Undecided | GA86 |
| Don Avenson | Iowa Chapter, American Society of Landscape Architects | Supporting | GA86 |
| Don Avenson | Iowa Chapter, American Society of Landscape Architects | Undecided | GA86 |
| Tom Cope | Iowa Chapter, American Society of Landscape Architects | Supporting | GA86 |
| Tom Cope | Iowa Chapter, American Society of Landscape Architects | Withdrawn | GA86 |
| Tom Cope | Iowa Chapter, American Society of Landscape Architects | Undecided | GA86 |
| Brad Epperly | Iowa Defense Counsel Association | Supporting | GA86 |
| Paula Dierenfeld | Iowa Defense Counsel Association | Supporting | GA86 |
| Scott Sundstrom | Iowa Defense Counsel Association | Supporting | GA86 |
| David Scott | Iowa Engineering Society | Supporting | GA86 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Opposing | GA86 |
| Katherine Carlucci | Iowa Insurance Institute | Supporting | GA86 |
| Thomas Stanberry | Iowa Insurance Institute | Supporting | GA86 |
| Doug Struyk | Iowa State Bar Association | Opposing | GA86 |
| George Appleby | Iowa State Bar Association | Opposing | GA86 |
| Jennifer Tyler | Iowa State Bar Association | Opposing | GA86 |
| Jim Carney | Iowa State Bar Association | Opposing | GA86 |
| Mike St. Clair | Iowa State Building and Construction Trades Council | Undecided | GA86 |
| tom fey | Iowa State Building and Construction Trades Council | Undecided | GA86 |
| Chad Kleppe | Master Builders of Iowa | Supporting | GA86 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Supporting | GA86 |
| Craig Walter | Mechanical Contractors Association of Iowa (MCAI) | Supporting | GA86 |
| Brian Johnson | NECA - Iowa (NEC) | Supporting | GA86 |
| Craig Walter | NECA - Iowa (NEC) | Supporting | GA86 |
| Frederick Haskins | Patterson Law Firm LLP | Undecided | GA86 |
| David Adelman | Sheet Metal Contractors of Iowa | Supporting | GA86 |
| Mark Cooper | South Central Iowa Federation of Labor AFL-CIO | Opposing | GA86 |
| Brian Johnson | State Farm Insurance | Undecided | GA86 |
| Craig Walter | State Farm Insurance | Undecided | GA86 |