| Dustin Blythe | AT & T | Undecided | GA87 |
| Mark Joyce | AT & T | Undecided | GA87 |
| Bill Wimmer | Alamo Rent A Car | Undecided | GA87 |
| Christopher Rants | Amazon.com Services, Inc. | Undecided | GA87 |
| Drew Klein | Americans For Prosperity | Undecided | GA87 |
| Kyle Carlson | Anthem, Inc. and Its Affiliates Including Amerigroup | Undecided | GA87 |
| Sandra Conlin | Associated Builders & Contractors of Iowa | Supporting | GA87 |
| Larry Blixt | Association of Iowa Fairs | Undecided | GA87 |
| Bill Wimmer | Cigar Association of America, Inc. | Undecided | GA87 |
| Mark Joyce | DuPont Businesses | Undecided | GA87 |
| Bill Wimmer | Enterprise Rent-A-Car | Undecided | GA87 |
| Jim Henter | Entertainment Software Association (ESA) | Opposing | GA87 |
| John Cacciatore | Google Inc. and its Affiliates | Undecided | GA87 |
| Lon Anderson | Google Inc. and its Affiliates | Undecided | GA87 |
| Bill Wimmer | Hy-Vee, Inc. | Undecided | GA87 |
| Bob Skow | Independent Insurance Agents of Iowa | Undecided | GA87 |
| Larry Blixt | Independent Insurance Agents of Iowa | Undecided | GA87 |
| Thomas O'Meara | Independent Insurance Agents of Iowa | Undecided | GA87 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Undecided | GA87 |
| Jessica Hyland | Iowa Association of Business and Industry (ABI) | Undecided | GA87 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA87 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA87 |
| Eric Goranson | Iowa Association of Christian Schools | Undecided | GA87 |
| David Palmer | Iowa Association of Community College Trustees (IACCT) | Undecided | GA87 |
| Donna Orton | Iowa Association of Community College Trustees (IACCT) | Undecided | GA87 |
| Haley Smith | Iowa Association of Electric Cooperatives | Undecided | GA87 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Undecided | GA87 |
| Larry Blixt | Iowa Association of Health Underwriters | Undecided | GA87 |
| Jennifer Kingland | Iowa Association of Realtors | Undecided | GA87 |
| Bill Wimmer | Iowa Beverage Association | Undecided | GA87 |
| Tom Chapman | Iowa Catholic Conference | Undecided | GA87 |
| John Stineman | Iowa Chamber Alliance | Supporting | GA87 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Opposing | GA87 |
| Dustin Miller | Iowa Chapter, American Institute of Architects | Opposing | GA87 |
| Katie Graham | Iowa Chapter, American Institute of Architects | Opposing | GA87 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Opposing | GA87 |
| Jeff Smith | Iowa Corn Growers Association(ICG) | Undecided | GA87 |
| Jerry Fitzgerald | Iowa Corn Growers Association(ICG) | Undecided | GA87 |
| Maggie Smith-Fitzgerald | Iowa Corn Growers Association(ICG) | Undecided | GA87 |
| Matt Fitzgerald | Iowa Corn Growers Association(ICG) | Undecided | GA87 |
| Mindy Poldberg | Iowa Corn Growers Association(ICG) | Undecided | GA87 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Opposing | GA87 |
| Brad Epperly | Iowa Geothermal Association | Opposing | GA87 |
| Dustin Miller | Iowa Geothermal Association | Opposing | GA87 |
| Katie Graham | Iowa Geothermal Association | Opposing | GA87 |
| Paula Dierenfeld | Iowa Geothermal Association | Opposing | GA87 |
| BRITTANY LUMLEY | Iowa Insurance Institute | Undecided | GA87 |
| Jeffrey Boeyink | Iowa Insurance Institute | Undecided | GA87 |
| Bill Wimmer | Iowa Lumber Association | Undecided | GA87 |
| Mike Heller | Iowa Renewable Fuels Association (IRF) | Undecided | GA87 |
| Paula Feltner | Iowa Renewable Fuels Association (IRF) | Undecided | GA87 |
| Jim Henter | Iowa Retail Federation | Undecided | GA87 |
| Bill Wimmer | Iowa Retired School Personnel Association | Undecided | GA87 |
| Christopher Rants | Iowa Solar Energy Trade Association | Opposing | GA87 |
| John Cacciatore | Iowa Solar Energy Trade Association | Opposing | GA87 |
| Mike Heller | Iowa State Association of Assessors | Undecided | GA87 |
| Paula Feltner | Iowa State Association of Assessors | Undecided | GA87 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA87 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA87 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA87 |
| William Peterson | Iowa State Association of Counties | Undecided | GA87 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA87 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA87 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA87 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA87 |
| Bradley Hudson | Iowa State Education Association | Opposing | GA87 |
| Melissa Peterson | Iowa State Education Association | Opposing | GA87 |
| Jennifer Kingland | Iowa Taxpayers Association | Undecided | GA87 |
| Larry Blixt | KWIK Trip, Inc. | Undecided | GA87 |
| Marc Beltrame | Kum and Go, L.C. | Undecided | GA87 |
| Matt McKinney | Kum and Go, L.C. | Undecided | GA87 |
| Christopher Rants | Life Serve Blood Center | Undecided | GA87 |
| John Cacciatore | Life Serve Blood Center | Undecided | GA87 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA87 |
| Bill Wimmer | National Rent A Car | Undecided | GA87 |
| Mike Heller | Petroleum Marketers Management Insurance Company (PMMIC) | Undecided | GA87 |
| Paula Feltner | Petroleum Marketers Management Insurance Company (PMMIC) | Undecided | GA87 |
| Eric Goranson | Plumbing Heating & Cooling Contractors of IA | Undecided | GA87 |
| Bill Wimmer | Q Casino, formerly Mystique Casino | Undecided | GA87 |
| Mark Joyce | Technology Association of Iowa | Undecided | GA87 |
| Christopher Rants | Travel Technology Association | Opposing | GA87 |
| John Cacciatore | Travel Technology Association | Opposing | GA87 |
| Kate Walton | Uber Technologies | Opposing | GA87 |
| Matt Eide | Uber Technologies | Opposing | GA87 |
| Mike Heller | Waste Management, Inc. | Undecided | GA87 |
| Paula Feltner | Waste Management, Inc. | Undecided | GA87 |
| Frank Stork | Wellmark, Inc. | Undecided | GA87 |
| Scott Sundstrom | Wellmark, Inc. | Undecided | GA87 |