| Drew Kamp | Ames Chamber of Commerce | Undecided | GA88 |
| Scott Newhard | Associated General Contractors of Iowa | Opposing | GA88 |
| Barbra Solberg | Cedar Rapids Metro Economic Alliance | Undecided | GA88 |
| Thomas Jochum | Central Iowa Building Construction Trades Council | Opposing | GA88 |
| Andrea Woodard | Greater Des Moines Partnership | Undecided | GA88 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA88 |
| Dustin Miller | Greater Des Moines Partnership | Undecided | GA88 |
| Katie Graham | Greater Des Moines Partnership | Undecided | GA88 |
| Paula Dierenfeld | Greater Des Moines Partnership | Undecided | GA88 |
| Maddie Wilcox | IBEW Iowa State Conference | Undecided | GA88 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA88 |
| Thomas Jochum | International Union of Operating Engineers-Local 234 | Opposing | GA88 |
| Emily Piper | Iowa Association of School Boards | Undecided | GA88 |
| Phil Jeneary | Iowa Association of School Boards | Undecided | GA88 |
| James Kersten | Iowa Central Community College | Undecided | GA88 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA88 |
| Dustin Miller | Iowa Chamber Alliance | Undecided | GA88 |
| Katie Graham | Iowa Chamber Alliance | Undecided | GA88 |
| Paula Dierenfeld | Iowa Chamber Alliance | Undecided | GA88 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Dustin Miller | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Katie Graham | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Doug Struyk | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA88 |
| Jennifer Dorman | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA88 |
| Jim Carney | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA88 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Opposing | GA88 |
| Julianne Frosolone | Iowa Federation of Labor, AFL-CIO | Opposing | GA88 |
| Alan Kemp | Iowa League of Cities | Undecided | GA88 |
| Daniel Stalder | Iowa League of Cities | Undecided | GA88 |
| Robert Palmer | Iowa League of Cities | Undecided | GA88 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA88 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA88 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA88 |
| William Peterson | Iowa State Association of Counties | Undecided | GA88 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA88 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA88 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA88 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA88 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA88 |
| Jennifer Dorman | Iowa State Bar Association | Undecided | GA88 |
| Jim Carney | Iowa State Bar Association | Undecided | GA88 |
| Michael Gronstal | Iowa State Building and Construction Trades | Opposing | GA88 |
| Dylan Gramlich | Laborers International Union of North America | Opposing | GA88 |
| Dylan Gramlich | Laborers International Union of North America | Undecided | GA88 |
| Ben Hammes | Master Builders of Iowa | Opposing | GA88 |
| Julie Smith | Master Builders of Iowa | Opposing | GA88 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA88 |
| Christopher Rants | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA88 |
| Justin Hupfer | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA88 |
| Brian Johnson | NECA - Iowa (NEC) | Undecided | GA88 |
| Christopher Rants | NECA - Iowa (NEC) | Undecided | GA88 |
| Justin Hupfer | NECA - Iowa (NEC) | Undecided | GA88 |
| Felicia Hilton | North Central States Regional Council of Carpenters | Opposing | GA88 |
| Brian Johnson | Polk County - Board of Supervisors | Undecided | GA88 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA88 |