| David Scott | American Council of Engineering Companies | Opposing | GA91 |
| David Scott | American Council of Engineering Companies | Undecided | GA91 |
| Sandra Conlin | Associated Builders & Contractors of Iowa | Undecided | GA91 |
| Emily Piper | Iowa Association of School Boards | Undecided | GA91 |
| Michelle Johnson | Iowa Association of School Boards | Undecided | GA91 |
| Carolann Jensen | Iowa Board of Regents | Undecided | GA91 |
| Jennifer Harbison | Iowa Board of Regents | Undecided | GA91 |
| Jillian Carlson | Iowa Board of Regents | Undecided | GA91 |
| Keith Saunders | Iowa Board of Regents | Undecided | GA91 |
| Clara Wulfsen | Iowa Competitive Bidding Alliance, Inc. | Supporting | GA91 |
| Doug Struyk | Iowa Competitive Bidding Alliance, Inc. | Supporting | GA91 |
| Jennifer Dorman | Iowa Competitive Bidding Alliance, Inc. | Supporting | GA91 |
| Jim Carney | Iowa Competitive Bidding Alliance, Inc. | Supporting | GA91 |
| Lyle Brehm | Iowa County Engineers Association | Undecided | GA91 |
| Todd Coffelt | Iowa Dept. of Natural Resources | Undecided | GA91 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Undecided | GA91 |
| Andrea Woodard | Iowa State Association of Counties | Undecided | GA91 |
| Beth Manley | Iowa State Association of Counties | Undecided | GA91 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA91 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA91 |
| Andrea Woodard | Iowa State Association of County Supervisors | Undecided | GA91 |
| Beth Manley | Iowa State Association of County Supervisors | Undecided | GA91 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA91 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA91 |
| Dylan Gramlich | Laborers International Union of North America | Undecided | GA91 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA91 |
| Kelly Meyers | Marion County Board of Supervisors | Undecided | GA91 |
| Ben Hammes | Master Builders of Iowa | Opposing | GA91 |
| Logan Shine | Master Builders of Iowa | Opposing | GA91 |
| David Adelman | Metropolitan Coalition | Undecided | GA91 |
| Frank Chiodo | Metropolitan Coalition | Undecided | GA91 |
| Matt Hinch | Metropolitan Coalition | Undecided | GA91 |
| Paige Thorson | Metropolitan Coalition | Undecided | GA91 |
| Sara Allen | Metropolitan Coalition | Undecided | GA91 |
| Dane Schumann | Mid-American Carpenters Regional Council | Undecided | GA91 |
| Dave Daughton | Rural School Advocates of Iowa | Supporting | GA91 |
| Margaret Buckton | Rural School Advocates of Iowa | Supporting | GA91 |
| Dave Daughton | School Administrators of Iowa | Supporting | GA91 |
| Margaret Buckton | Urban Education Network of Iowa | Supporting | GA91 |