| Mark Joyce | AT & T | Supporting | GA88 |
| Doug Struyk | Accountants Association of Iowa | Undecided | GA88 |
| Jennifer Dorman | Accountants Association of Iowa | Undecided | GA88 |
| Jim Carney | Accountants Association of Iowa | Undecided | GA88 |
| Kellie Paschke | Alamo Rent A Car | Undecided | GA88 |
| Troy Skinner | Alamo Rent A Car | Undecided | GA88 |
| Michael Triplett | Alliance For Automotive Innovation | Undecided | GA88 |
| Drew Klein | Americans For Prosperity | Undecided | GA88 |
| Tyler Raygor | Americans For Prosperity | Undecided | GA88 |
| David Adelman | City of Sioux City | Undecided | GA88 |
| Frank Chiodo | City of Sioux City | Undecided | GA88 |
| Matt Hinch | City of Sioux City | Undecided | GA88 |
| Scott Newhard | City of Sioux City | Undecided | GA88 |
| MaryNelle Trefz | Common Good Iowa | Opposing | GA88 |
| Sheila Hansen | Common Good Iowa | Opposing | GA88 |
| Tim Reilly | Department of Revenue | Undecided | GA88 |
| Mark Joyce | E. I. du Pont de Nemours and Company dba Corteva Agriscience | Undecided | GA88 |
| Kellie Paschke | Enterprise Rent-A-Car | Undecided | GA88 |
| Troy Skinner | Enterprise Rent-A-Car | Undecided | GA88 |
| John Cacciatore | Google LLC and its Affiliates | Undecided | GA88 |
| Lon Anderson | Google LLC and its Affiliates | Undecided | 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 |
| Joe Murphy | Greater Des Moines Partnership | Undecided | GA88 |
| Katie Graham | Greater Des Moines Partnership | Undecided | GA88 |
| Paula Dierenfeld | Greater Des Moines Partnership | Undecided | GA88 |
| Jake Ketzner | Independent Insurance Agents of Iowa | Undecided | GA88 |
| Larry Blixt | Independent Insurance Agents of Iowa | Undecided | GA88 |
| Thomas O'Meara | Independent Insurance Agents of Iowa | Undecided | GA88 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Undecided | GA88 |
| Drew Wynes | Iowa Association of Business and Industry (ABI) | Undecided | GA88 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA88 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA88 |
| Eric Goranson | Iowa Association of Christian Schools | Undecided | GA88 |
| Jake Ketzner | Iowa Association of Health Underwriters | Undecided | GA88 |
| Larry Blixt | Iowa Association of Health Underwriters | Undecided | GA88 |
| Emily Piper | Iowa Association of School Boards | Opposing | GA88 |
| Phil Jeneary | Iowa Association of School Boards | Opposing | GA88 |
| Brad Epperly | Iowa Automobile Dealers Association | Undecided | GA88 |
| Dustin Miller | Iowa Automobile Dealers Association | Undecided | GA88 |
| Katie Graham | Iowa Automobile Dealers Association | Undecided | GA88 |
| Paula Dierenfeld | Iowa Automobile Dealers Association | Undecided | GA88 |
| Jenica Lensmeyer | Iowa Bankers Association | Undecided | GA88 |
| Robert Hartwig | Iowa Bankers Association | Undecided | GA88 |
| Sharon Presnall | Iowa Bankers Association | Undecided | GA88 |
| Larry Murphy | Iowa Catholic Conference | Undecided | GA88 |
| Meghan Malloy | Iowa Catholic Conference | Undecided | GA88 |
| Tom Chapman | Iowa Catholic Conference | Undecided | GA88 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA88 |
| Dustin Miller | Iowa Chamber Alliance | Undecided | GA88 |
| John Stineman | Iowa Chamber Alliance | Undecided | GA88 |
| Katie Graham | Iowa Chamber Alliance | Undecided | GA88 |
| Paula Dierenfeld | Iowa Chamber Alliance | Undecided | GA88 |
| Gracie Brandsgard | Iowa Credit Union League | Undecided | GA88 |
| Justin Hupfer | Iowa Credit Union League | Undecided | GA88 |
| Michael Triplett | Iowa Funeral Directors Association | Undecided | GA88 |
| David Adelman | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA88 |
| Frank Chiodo | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA88 |
| Matt Hinch | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA88 |
| Sara Allen | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA88 |
| Will Rogers | Iowa Nebraska Farm Equipment Dealers Association | Supporting | GA88 |
| Mike Heller | Iowa Renewable Fuels Association (IRF) | Undecided | GA88 |
| Paula Feltner | Iowa Renewable Fuels Association (IRF) | Undecided | GA88 |
| Jim Henter | Iowa Retail Federation | Undecided | GA88 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA88 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA88 |
| Katie Graham | Iowa Society of Certified Public Accountants | Undecided | GA88 |
| Paula Dierenfeld | Iowa Society of Certified Public Accountants | Undecided | GA88 |
| Mike Heller | Iowa State Association of Assessors | Undecided | GA88 |
| Paula Feltner | Iowa State Association of Assessors | 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 Auditors | Undecided | GA88 |
| Kristi Harshbarger | Iowa State Association of County Auditors | Undecided | GA88 |
| Lucas Beenken | Iowa State Association of County Auditors | Undecided | GA88 |
| William Peterson | Iowa State Association of County Auditors | 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 |
| Bradley Hudson | Iowa State Education Association | Opposing | GA88 |
| Melissa Peterson | Iowa State Education Association | Opposing | GA88 |
| Jennifer Kingland | Iowa Taxpayers Association | Undecided | GA88 |
| Tom Sands | Iowa Taxpayers Association | Undecided | GA88 |
| Doug Struyk | Mediacom Communications Corporation | Undecided | GA88 |
| Jennifer Dorman | Mediacom Communications Corporation | Undecided | GA88 |
| Jim Carney | Mediacom Communications Corporation | Undecided | GA88 |
| Doug Struyk | Meredith Corporation | Undecided | GA88 |
| Jennifer Dorman | Meredith Corporation | Undecided | GA88 |
| Jim Carney | Meredith Corporation | Undecided | GA88 |
| Kate Walton | Motion Picture Association, Inc. | Undecided | GA88 |
| Matt Eide | Motion Picture Association, Inc. | Undecided | GA88 |
| Kellie Paschke | National Rent A Car | Undecided | GA88 |
| Troy Skinner | National Rent A Car | Undecided | GA88 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| Angie Long | The Family Leader | Undecided | GA88 |
| Chuck Hurley | The Family Leader | Undecided | GA88 |
| Daniel Sunne | The Family Leader | Undecided | GA88 |
| Danny Carroll | The Family Leader | Undecided | GA88 |
| Angie Long | The Family Leader Foundation | Undecided | GA88 |
| Chuck Hurley | The Family Leader Foundation | Undecided | GA88 |
| Daniel Sunne | The Family Leader Foundation | Undecided | GA88 |
| Danny Carroll | The Family Leader Foundation | Undecided | GA88 |
| Kate Walton | Uber Technologies | Undecided | GA88 |
| Matt Eide | Uber Technologies | Undecided | GA88 |
| Mike Heller | Waste Management, Inc. | Undecided | GA88 |
| Paula Feltner | Waste Management, Inc. | Undecided | GA88 |
| Frank Stork | Wellmark, Inc. | Undecided | GA88 |
| Scott Sundstrom | Wellmark, Inc. | Undecided | GA88 |
| Doug Struyk | Wells Fargo & Company | Undecided | GA88 |
| Jennifer Dorman | Wells Fargo & Company | Undecided | GA88 |
| Jim Carney | Wells Fargo & Company | Undecided | GA88 |