| Drew Kamp | Ames Chamber of Commerce | Undecided | GA86 |
| Sandra Conlin | Associated Builders & Contractors of Iowa | Undecided | GA86 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA86 |
| Thomas Jochum | Central Iowa Building Construction Trades Council | Supporting | GA86 |
| Gary Grant | City of Cedar Rapids | Undecided | GA86 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA86 |
| Meghan Malloy | City of Cedar Rapids | 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 | Supporting | GA86 |
| James Piazza, Jr. | International Union of Operating Engineers-Local 234 | Supporting | GA86 |
| Jessica Hyland | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Myron Linn | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA86 |
| David Palmer | Iowa Association of Community College Trustees (IACCT) | Undecided | GA86 |
| John Schmaltz | Iowa Association of Community College Trustees (IACCT) | 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 |
| Jennifer Klein | Iowa Economic Development Authority | Undecided | GA86 |
| Kristin Hanks-Bents | Iowa Economic Development Authority | Undecided | GA86 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Supporting | GA86 |
| Dustin Miller | Iowa League of Cities | Undecided | GA86 |
| Robert Palmer | Iowa League of Cities | Undecided | GA86 |
| Angela Davis | Iowa Lumber Association | Undecided | GA86 |
| Bill Wimmer | Iowa Lumber Association | Undecided | GA86 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA86 |
| Paula Dierenfeld | Iowa Society of Certified Public Accountants | Undecided | GA86 |
| Scott Sundstrom | Iowa Society of Certified Public Accountants | Undecided | GA86 |
| Mike St. Clair | Iowa State Building and Construction Trades Council | Supporting | GA86 |
| tom fey | Iowa State Building and Construction Trades Council | Supporting | GA86 |
| Jennifer Kingland | Iowa Taxpayers Association | Undecided | GA86 |
| Ernie Adkison | Iowans for Tax Relief | Undecided | GA86 |
| Robert Solt | Iowans for Tax Relief | Undecided | GA86 |
| Larry Blixt | KWIK Trip, Inc. | Withdrawn | GA86 |
| Larry Blixt | KWIK Trip, Inc. | Undecided | GA86 |
| Erich Schmidt | Laborers International Union of North America | Supporting | GA86 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA86 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA86 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA86 |
| Chad Kleppe | Master Builders of Iowa | Undecided | GA86 |
| Julie Smith | Master Builders of Iowa | Undecided | GA86 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Supporting | GA86 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA86 |
| Craig Walter | Mechanical Contractors Association of Iowa (MCAI) | Supporting | GA86 |
| Craig Walter | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA86 |
| Brian Johnson | NECA - Iowa (NEC) | Supporting | GA86 |
| Brian Johnson | NECA - Iowa (NEC) | Undecided | GA86 |
| Craig Walter | NECA - Iowa (NEC) | Supporting | GA86 |
| Craig Walter | NECA - Iowa (NEC) | Undecided | GA86 |
| Kristin Failor | National Federation of Independent Business (NFIB /IA) | Undecided | GA86 |
| Christopher Rants | Plumbers and Steam Fitters Local 33 | Supporting | GA86 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Supporting | GA86 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA86 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA86 |
| Chris Smith | SMART Sheet Metal Local 263 | Supporting | GA86 |
| Chris Smith | SMART Sheet Metal Local 45 | Supporting | GA86 |
| David Adelman | Sheet Metal Contractors of Iowa | Supporting | GA86 |
| Frank Chiodo | Sheet Metal Contractors of Iowa | Supporting | GA86 |
| Matt Hinch | Sheet Metal Contractors of Iowa | Supporting | GA86 |
| Mark Joyce | Technology Association of Iowa | Undecided | GA86 |
| John Pederson | Tyson Foods, Inc. | Undecided | GA86 |
| Kelly Nuckolls | Tyson Foods, Inc. | Undecided | GA86 |
| Matt Eide | Tyson Foods, Inc. | Undecided | GA86 |
| Susan Fenton | Weitz Company | Undecided | GA86 |