| David Adelman | Associated General Contractors of Iowa | Supporting | GA89 |
| Frank Chiodo | Associated General Contractors of Iowa | Supporting | GA89 |
| Matt Hinch | Associated General Contractors of Iowa | Supporting | GA89 |
| Scott Newhard | Associated General Contractors of Iowa | Supporting | GA89 |
| Brad Epperly | BNSF Railway Co. | Undecided | GA89 |
| Dustin Miller | BNSF Railway Co. | Undecided | GA89 |
| Brad Epperly | Bayer U.S. LLC | Undecided | GA89 |
| Dustin Miller | Bayer U.S. LLC | Undecided | GA89 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA89 |
| Drew Kamp | Council Bluffs Chamber of Commerce | Supporting | GA89 |
| Andrea Woodard | Greater Des Moines Partnership | Undecided | GA89 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA89 |
| Dustin Miller | Greater Des Moines Partnership | Undecided | GA89 |
| James Piazza, Jr. | Heavy Highway Contractors Association | Opposing | GA89 |
| Brad Epperly | Helena Agri-Enterprises, LLC | Undecided | GA89 |
| Dustin Miller | Helena Agri-Enterprises, LLC | Undecided | GA89 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Brad Epperly | Iowa Automobile Dealers Association | Undecided | GA89 |
| Dustin Miller | Iowa Automobile Dealers Association | Undecided | GA89 |
| Larry Murphy | Iowa Catholic Conference | Opposing | GA89 |
| Meghan Malloy | Iowa Catholic Conference | Opposing | GA89 |
| Tom Chapman | Iowa Catholic Conference | Opposing | GA89 |
| Brad Epperly | Iowa Chamber Alliance | Supporting | GA89 |
| Dustin Miller | Iowa Chamber Alliance | Supporting | GA89 |
| Brad Epperly | Iowa Collectors Association, Inc. | Undecided | GA89 |
| Dustin Miller | Iowa Collectors Association, Inc. | Undecided | GA89 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Opposing | GA89 |
| Brad Epperly | Iowa Grocery Industry Association | Undecided | GA89 |
| Dustin Miller | Iowa Grocery Industry Association | Undecided | GA89 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA89 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA89 |
| Michael Gronstal | Iowa State Building and Construction Trades | Opposing | GA89 |
| Melissa Peterson | Iowa State Education Association | Opposing | GA89 |
| Morgan Miller | Iowa State Education Association | Opposing | GA89 |
| John Hall | Marshalltown Area Chamber of Commerce | Supporting | GA89 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA89 |
| Christopher Rants | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA89 |
| Justin Hupfer | Mechanical Contractors Association of Iowa (MCAI) | Undecided | GA89 |
| Brian Johnson | NECA - Iowa (NEC) | Undecided | GA89 |
| Christopher Rants | NECA - Iowa (NEC) | Undecided | GA89 |
| Justin Hupfer | NECA - Iowa (NEC) | Undecided | GA89 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA89 |
| Felicia Hilton | North Central States Regional Council of Carpenters | Opposing | GA89 |
| Kevin McCarthy | North Central States Regional Council of Carpenters | Opposing | GA89 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Opposing | GA89 |
| Kelli Harrison | UAW Region 4 | Opposing | GA89 |
| Karl Schilling | United Professionals/UE | Opposing | GA89 |
| Mike Heller | Waste Management, Inc. | Undecided | GA89 |
| Paula Feltner | Waste Management, Inc. | Undecided | GA89 |