| Melissa Speed | AFSCME Iowa Council 61 | Undecided | GA90 |
| Sandra Conlin | Associated Builders & Contractors of Iowa | Supporting | GA90 |
| Scott Newhard | Associated General Contractors of Iowa | Supporting | GA90 |
| Threase Harms | BLD Connection Iowa | Supporting | GA90 |
| Barbra Solberg | Cedar Rapids Metro Economic Alliance | Supporting | GA90 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Supporting | GA90 |
| Drew Kamp | Council Bluffs Chamber of Commerce | Supporting | GA90 |
| Ryan Sempf | Dubuque Area Chamber of Commerce | Undecided | GA90 |
| Molly Severn | Governor's Office | Supporting | GA90 |
| Andrea Woodard | Greater Des Moines Partnership | Supporting | GA90 |
| Brad Epperly | Greater Des Moines Partnership | Supporting | GA90 |
| Dustin Miller | Greater Des Moines Partnership | Supporting | GA90 |
| James Piazza, Jr. | Heavy Highway Contractors Association | Opposing | GA90 |
| James Piazza, Jr. | Heavy Highway Contractors Association | Undecided | GA90 |
| Jake Highfill | Home Builders Association of Iowa | Supporting | GA90 |
| Jay Iverson | Home Builders Association of Iowa | Supporting | GA90 |
| Tony Phillips | Home Builders Association of Iowa | Supporting | GA90 |
| Nick Laning | IBEW Iowa State Conference | Opposing | GA90 |
| Nick Laning | IBEW Iowa State Conference | Undecided | GA90 |
| Threase Harms | IBEW Iowa State Conference | Opposing | GA90 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA90 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA90 |
| Emily Shields | Iowa Association of Community College Trustees | Undecided | GA90 |
| Jeff Smith | Iowa Association of Community College Trustees | Undecided | GA90 |
| Laurie Wolf | Iowa Association of Community College Trustees | Undecided | GA90 |
| Maggie Smith-Fitzgerald | Iowa Association of Community College Trustees | Undecided | GA90 |
| Matt Fitzgerald | Iowa Association of Community College Trustees | Undecided | GA90 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Undecided | GA90 |
| Chelsea Hoye | Iowa Barber and Cosmetology School Association | Undecided | GA90 |
| Nick Laning | Iowa Barber and Cosmetology School Association | Undecided | GA90 |
| Threase Harms | Iowa Barber and Cosmetology School Association | Undecided | GA90 |
| Joe Murphy | Iowa Business Council | Supporting | GA90 |
| Brad Epperly | Iowa Chamber Alliance | Supporting | GA90 |
| Dustin Miller | Iowa Chamber Alliance | Supporting | GA90 |
| Maddie Wilcox | Iowa Department of Health and Human Services | Undecided | GA90 |
| Carlyn Crowe | Iowa Developmental Disabilities Council | Undecided | GA90 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Opposing | GA90 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Undecided | GA90 |
| David Adelman | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA90 |
| Frank Chiodo | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA90 |
| Lillie Brady | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA90 |
| Matt Hinch | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA90 |
| Sara Allen | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA90 |
| Michael Gronstal | Iowa State Building and Construction Trades | Opposing | GA90 |
| Michael Gronstal | Iowa State Building and Construction Trades | Undecided | GA90 |
| Melissa Peterson | Iowa State Education Association | Undecided | GA90 |
| Morgan Miller | Iowa State Education Association | Undecided | GA90 |
| Kate Walton | Iowa Wine Growers Association | Undecided | GA90 |
| Madeleine Bradley | Iowa Wine Growers Association | Undecided | GA90 |
| Matt Eide | Iowa Wine Growers Association | Undecided | GA90 |
| Brooke Axiotis | Iowa Workforce Development | Supporting | GA90 |
| Jeffrey Koncsol | Iowa Workforce Development | Supporting | GA90 |
| Ryan West | Iowa Workforce Development | Supporting | GA90 |
| Gary Grant | MH/DS of East Central Region | Supporting | GA90 |
| Larry Murphy | MH/DS of East Central Region | Supporting | GA90 |
| John Hall | Marshalltown Area Chamber of Commerce | Supporting | GA90 |
| Christopher Rants | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA90 |
| Justin Hupfer | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA90 |
| Onnalee Gettler | MidAmerican Energy Company | Undecided | GA90 |
| Christopher Rants | NECA - Iowa (NEC) | Undecided | GA90 |
| Justin Hupfer | NECA - Iowa (NEC) | Undecided | GA90 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA90 |
| Dane Schumann | North Central States Regional Council of Carpenters | Opposing | GA90 |
| Dane Schumann | North Central States Regional Council of Carpenters | Undecided | GA90 |
| Felicia Hilton | North Central States Regional Council of Carpenters | Opposing | GA90 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Opposing | GA90 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Undecided | GA90 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA90 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA90 |
| Dave Daughton | Rural School Advocates of Iowa | Supporting | GA90 |
| Margaret Buckton | Rural School Advocates of Iowa | Supporting | GA90 |
| Dave Daughton | School Administrators of Iowa | Supporting | GA90 |
| David Adelman | Sheet Metal Contractors of Iowa | Undecided | GA90 |
| Frank Chiodo | Sheet Metal Contractors of Iowa | Undecided | GA90 |
| Lillie Brady | Sheet Metal Contractors of Iowa | Undecided | GA90 |
| Matt Hinch | Sheet Metal Contractors of Iowa | Undecided | GA90 |
| Sara Allen | Sheet Metal Contractors of Iowa | Undecided | GA90 |
| Margaret Buckton | Urban Education Network of Iowa | Supporting | GA90 |