| Amy Campbell | AARP Iowa | Undecided | GA89 |
| Brad Anderson | AARP Iowa | Undecided | GA89 |
| Craig Patterson | AARP Iowa | Undecided | GA89 |
| Melissa Speed | AFSCME Iowa Council 61 | Opposing | GA89 |
| Brad Epperly | AIG-American International Companies | Undecided | GA89 |
| Dustin Miller | AIG-American International Companies | Undecided | GA89 |
| Dustin Blythe | AT & T | Supporting | GA89 |
| Jeffrey Boeyink | AT & T | Supporting | GA89 |
| Mark Joyce | AT & T | Supporting | GA89 |
| Kate Walton | Alter Trading Corporation | Supporting | GA89 |
| Madeleine Bradley | Alter Trading Corporation | Supporting | GA89 |
| Matt Eide | Alter Trading Corporation | Supporting | GA89 |
| Drew Klein | Americans For Prosperity | Supporting | GA89 |
| Tyler Raygor | Americans For Prosperity | Supporting | GA89 |
| Brad Epperly | Ames Chamber of Commerce | Supporting | GA89 |
| Dustin Miller | Ames Chamber of Commerce | Supporting | GA89 |
| Morgan Fritz | Annett Holdings | Supporting | GA89 |
| Robert Weiser | Annett Holdings | Supporting | GA89 |
| Kate Walton | Arconic (Formerly Alcoa) | Supporting | GA89 |
| Madeleine Bradley | Arconic (Formerly Alcoa) | Supporting | GA89 |
| Matt Eide | Arconic (Formerly Alcoa) | Supporting | GA89 |
| Sandra Conlin | Associated Builders & 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 |
| Sydney Gangestad | CHILDSERVE | Undecided | GA89 |
| Tim Coonan | CHILDSERVE | Undecided | GA89 |
| Morgan Fritz | CRST International | Supporting | GA89 |
| Robert Weiser | CRST International | Supporting | GA89 |
| Kellie Paschke | CUNA Mutual Group | Undecided | GA89 |
| Kelly Meyers | CUNA Mutual Group | Undecided | GA89 |
| Logan Murray | CUNA Mutual Group | Undecided | GA89 |
| Troy Skinner | CUNA Mutual Group | Undecided | GA89 |
| Barbra Solberg | Cedar Rapids Metro Economic Alliance | Supporting | GA89 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Withdrawn | GA89 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Supporting | GA89 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA89 |
| Kate Hansen | Center for Rural Affairs | Undecided | GA89 |
| Mike Owen | Common Good Iowa | Opposing | GA89 |
| Natalie Veldhouse | Common Good Iowa | Opposing | GA89 |
| Sheila Hansen | Common Good Iowa | Opposing | GA89 |
| Mark Joyce | Corteva Agriscience | Supporting | GA89 |
| Robert Haus | Corteva Agriscience | Supporting | GA89 |
| Drew Kamp | Council Bluffs Chamber of Commerce | Supporting | GA89 |
| Ryan Sempf | Dubuque Area Chamber of Commerce | Supporting | GA89 |
| Ryan Sempf | Dubuque Area Chamber of Commerce | Undecided | GA89 |
| Jake Ketzner | Eastlake Partnership | Supporting | GA89 |
| Molly Severn | Governor's Office | Supporting | GA89 |
| Andrea Woodard | Greater Des Moines Partnership | Supporting | GA89 |
| Brad Epperly | Greater Des Moines Partnership | Supporting | GA89 |
| Dustin Miller | Greater Des Moines Partnership | Supporting | GA89 |
| Michael Triplett | HNTB Corporation | Undecided | GA89 |
| Brad Epperly | Helena Agri-Enterprises, LLC | Undecided | GA89 |
| Dustin Miller | Helena Agri-Enterprises, LLC | Undecided | GA89 |
| Jake Highfill | Home Builders Association of Iowa | Supporting | GA89 |
| Jay Iverson | Home Builders Association of Iowa | Supporting | GA89 |
| Mark Joyce | Hy-Vee, Inc. | Supporting | GA89 |
| Jake Ketzner | Independent Insurance Agents of Iowa | Supporting | GA89 |
| Larry Blixt | Independent Insurance Agents of Iowa | Supporting | GA89 |
| Thomas O'Meara | Independent Insurance Agents of Iowa | Supporting | GA89 |
| Michael McCarthy | Iowa Alliance For Retired Americans | Opposing | GA89 |
| Bob Rafferty | Iowa American Water Co. | Undecided | GA89 |
| Nick Laning | Iowa American Water Co. | 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 |
| Steffi Lee | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Undecided | GA89 |
| Brad Epperly | Iowa Automobile Dealers Association | Undecided | GA89 |
| Dustin Miller | Iowa Automobile Dealers Association | Undecided | GA89 |
| Jenica Lensmeyer | Iowa Bankers Association | Supporting | GA89 |
| John Sorensen | Iowa Bankers Association | Supporting | GA89 |
| Mike Rozenboom | Iowa Bankers Association | Supporting | GA89 |
| Sharon Presnall | Iowa Bankers Association | Supporting | GA89 |
| David Adelman | Iowa Biotechnology Association | Supporting | GA89 |
| Frank Chiodo | Iowa Biotechnology Association | Supporting | GA89 |
| Jessica Hyland | Iowa Biotechnology Association | Supporting | GA89 |
| Lillie Brady | Iowa Biotechnology Association | Supporting | GA89 |
| Matt Hinch | Iowa Biotechnology Association | Supporting | GA89 |
| Sara Allen | Iowa Biotechnology Association | Supporting | GA89 |
| Brad Epperly | Iowa Broadcasters Association | Undecided | GA89 |
| Dustin Miller | Iowa Broadcasters Association | Undecided | GA89 |
| Joe Murphy | Iowa Business Council | Supporting | GA89 |
| Brad Epperly | Iowa Business Energy Coalition (IBEC) | Undecided | GA89 |
| Dustin Miller | Iowa Business Energy Coalition (IBEC) | Undecided | GA89 |
| Larry Murphy | Iowa Catholic Conference | Undecided | GA89 |
| Meghan Malloy | Iowa Catholic Conference | Undecided | GA89 |
| Tom Chapman | Iowa Catholic Conference | Undecided | GA89 |
| Kellie Paschke | Iowa Cattlemen's Association | Undecided | GA89 |
| Kelly Meyers | Iowa Cattlemen's Association | Undecided | GA89 |
| Logan Murray | Iowa Cattlemen's Association | Undecided | GA89 |
| Troy Skinner | Iowa Cattlemen's Association | Undecided | GA89 |
| James Kersten | Iowa Central Community College | Supporting | GA89 |
| Brad Epperly | Iowa Chamber Alliance | Supporting | GA89 |
| Dustin Miller | Iowa Chamber Alliance | Supporting | GA89 |
| Christopher Rants | Iowa Credit Union League | Supporting | GA89 |
| Gracie Brandsgard | Iowa Credit Union League | Supporting | GA89 |
| Justin Hupfer | Iowa Credit Union League | Supporting | GA89 |
| Lon Anderson | Iowa Credit Union League | Supporting | GA89 |
| Deanna Triplett | Iowa Economic Development Authority | Supporting | GA89 |
| Kevin Kuhle | Iowa Farm Bureau Federation | Undecided | GA89 |
| Matt Gronewald | Iowa Farm Bureau Federation | Undecided | GA89 |
| Matthew Steinfeldt | Iowa Farm Bureau Federation | Undecided | GA89 |
| Emilee Harris-Puricelli | Iowa Farmers Union | Undecided | GA89 |
| Nick Laning | Iowa Farmers Union | Undecided | GA89 |
| Threase Harms | Iowa Farmers Union | Undecided | GA89 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Opposing | GA89 |
| Kristin Hanks-Bents | Iowa Finance Authority | Supporting | GA89 |
| Michael Triplett | Iowa Funeral Directors Association | Supporting | GA89 |
| Michael Triplett | Iowa Funeral Directors Association | Undecided | GA89 |
| Brad Epperly | Iowa Grocery Industry Association | Undecided | GA89 |
| Dustin Miller | Iowa Grocery Industry Association | Undecided | GA89 |
| David Adelman | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA89 |
| Frank Chiodo | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA89 |
| Lillie Brady | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA89 |
| Matt Hinch | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA89 |
| Sara Allen | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA89 |
| Brad Epperly | Iowa Newspaper Association | Undecided | GA89 |
| Dustin Miller | Iowa Newspaper Association | Undecided | GA89 |
| Kellie Paschke | Iowa Peace Officers Association | Supporting | GA89 |
| Kelly Meyers | Iowa Peace Officers Association | Supporting | GA89 |
| Logan Murray | Iowa Peace Officers Association | Supporting | GA89 |
| Troy Skinner | Iowa Peace Officers Association | Supporting | GA89 |
| Christopher Rants | Iowa Retired School Personnel Association | Supporting | GA89 |
| John Cacciatore | Iowa Retired School Personnel Association | Supporting | GA89 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA89 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA89 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA89 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA89 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA89 |
| William Peterson | Iowa State Association of Counties | Undecided | GA89 |
| Jamie Cashman | Iowa State Association of County Auditors | Undecided | GA89 |
| Kristi Harshbarger | Iowa State Association of County Auditors | Undecided | GA89 |
| Lucas Beenken | Iowa State Association of County Auditors | Undecided | GA89 |
| William Peterson | Iowa State Association of County Auditors | Undecided | GA89 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA89 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA89 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA89 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA89 |
| Tom Sands | Iowa Taxpayers Association | Supporting | GA89 |
| Michael Triplett | Iowans For Alternatives To Smoking And Tobacco | Undecided | GA89 |
| Jake Highfill | Iowans for Tax Relief | Supporting | GA89 |
| Victoria Sinclair | Iowans for Tax Relief | Supporting | GA89 |
| Jake Ketzner | KWIK Trip, Inc. | Supporting | GA89 |
| Larry Blixt | KWIK Trip, Inc. | Supporting | GA89 |
| Kate Walton | Kuder | Supporting | GA89 |
| Madeleine Bradley | Kuder | Supporting | GA89 |
| Matt Eide | Kuder | Supporting | GA89 |
| Kate Walton | Lennox International | Supporting | GA89 |
| Madeleine Bradley | Lennox International | Supporting | GA89 |
| Matt Eide | Lennox International | Supporting | GA89 |
| Paige Thorson | Marathon Petroleum Corporation and its Subsidiaries | Supporting | GA89 |
| John Hall | Marshalltown Area Chamber of Commerce | Supporting | GA89 |
| Ben Hammes | Master Builders of Iowa | Supporting | GA89 |
| Julie Smith | Master Builders of Iowa | Supporting | GA89 |
| Onnalee Gettler | MidAmerican Energy Company | Supporting | GA89 |
| Dorman Otte | National Active & Retired Federal Employees | Supporting | GA89 |
| Dr. Audrey M. Hiatt, DNP, ARNP-BC | National Active & Retired Federal Employees | Supporting | GA89 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA89 |
| Monica McCarthy | Older Iowans Legislature | Undecided | GA89 |
| Kate Walton | POET, LLC | Supporting | GA89 |
| Madeleine Bradley | POET, LLC | Supporting | GA89 |
| Matt Eide | POET, LLC | Supporting | GA89 |
| Sydney Gangestad | Principal Financial Group | Supporting | GA89 |
| Tim Coonan | Principal Financial Group | Supporting | GA89 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA89 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA89 |
| Brad Epperly | Quad Cities Chamber of Commerce | Undecided | GA89 |
| Dustin Miller | Quad Cities Chamber of Commerce | Undecided | GA89 |
| Michael Triplett | Self Storage Association | Undecided | GA89 |
| Jake Highfill | Smart Contracts | Supporting | GA89 |
| Steven Schoenebaum | Smithfield Foods, Inc. | Undecided | GA89 |
| Steven Schoenebaum | Syngenta Crop Protection | Undecided | GA89 |
| Michael Triplett | T-Mobile | Undecided | GA89 |
| Jim Romar | Teamsters Local 238 | Opposing | GA89 |
| Brad Epperly | Toppling Goliath Brewing Co. | Undecided | GA89 |
| Dustin Miller | Toppling Goliath Brewing Co. | Undecided | GA89 |
| Kate Walton | Tyson Foods, Inc. | Supporting | GA89 |
| Madeleine Bradley | Tyson Foods, Inc. | Supporting | GA89 |
| Matt Eide | Tyson Foods, Inc. | Supporting | GA89 |
| Kelli Harrison | UAW Region 4 | Opposing | GA89 |
| Michael Triplett | Union Pacific Railroad | Undecided | GA89 |
| Karl Schilling | United Professionals/UE | Opposing | GA89 |
| Brandon Geib | Wellmark, Inc. | Undecided | GA89 |
| Scott Sundstrom | Wellmark, Inc. | Undecided | GA89 |