| Mazie Stilwell | AFSCME Iowa Council 61 | Opposing | GA88 |
| Morgan Miller | AFSCME Iowa Council 61 | Opposing | GA88 |
| Drew Klein | Americans For Prosperity | Supporting | GA88 |
| Tyler Raygor | Americans For Prosperity | Supporting | GA88 |
| Thomas Jochum | Central Iowa Building Construction Trades Council | Opposing | GA88 |
| Kate Walton | City of Cedar Falls | Opposing | GA88 |
| Matt Eide | City of Cedar Falls | Opposing | GA88 |
| Gary Grant | City of Cedar Rapids | Opposing | GA88 |
| Larry Murphy | City of Cedar Rapids | Opposing | GA88 |
| Meghan Malloy | City of Cedar Rapids | Opposing | GA88 |
| Jon Murphy | City of Coralville | Opposing | GA88 |
| Tom Cope | City of Coralville | Opposing | GA88 |
| Alex Hassel | City of Des Moines | Opposing | GA88 |
| Doug Struyk | City of Des Moines | Opposing | GA88 |
| Jen Schulte | City of Des Moines | Opposing | GA88 |
| Jennifer Dorman | City of Des Moines | Opposing | GA88 |
| Jim Carney | City of Des Moines | Opposing | GA88 |
| Doug Struyk | City of Iowa City | Opposing | GA88 |
| Jennifer Dorman | City of Iowa City | Opposing | GA88 |
| Jim Carney | City of Iowa City | Opposing | GA88 |
| Doug Struyk | City of Waukee | Opposing | GA88 |
| Jennifer Dorman | City of Waukee | Opposing | GA88 |
| Jim Carney | City of Waukee | Opposing | GA88 |
| Julie Smith | City of West Des Moines | Opposing | GA88 |
| Sydney Gangestad | City of West Des Moines | Opposing | GA88 |
| Tim Coonan | City of West Des Moines | Opposing | GA88 |
| Tim Reilly | Department of Revenue | Undecided | GA88 |
| Barry Gentry | Dubuque Area Chamber of Commerce | Undecided | GA88 |
| Brad Epperly | Eastlake Partnership | Undecided | GA88 |
| Dustin Miller | Eastlake Partnership | Undecided | GA88 |
| Katie Graham | Eastlake Partnership | Undecided | GA88 |
| Paula Dierenfeld | Eastlake Partnership | 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 |
| Dane Schumann | Grow Clinton County | Opposing | GA88 |
| Maddie Wilcox | Grow Clinton County | Opposing | GA88 |
| Threase Harms | Grow Clinton County | Opposing | GA88 |
| R. Bruce Beeston | HOA Reform Coaltion | Undecided | GA88 |
| Jay Iverson | Home Builders Association of Iowa | Opposing | GA88 |
| Thomas Jochum | International Union of Operating Engineers-Local 234 | Opposing | GA88 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| Drew Wynes | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA88 |
| Jon Murphy | Iowa Association of Councils of Governments | Undecided | GA88 |
| Tom Cope | Iowa Association of Councils of Governments | Undecided | GA88 |
| Amy Campbell | Iowa Association of County Conservation Boards | Opposing | GA88 |
| Craig Patterson | Iowa Association of County Conservation Boards | Opposing | GA88 |
| Julie Smith | Iowa Association of Municipal Utilities | Undecided | GA88 |
| Timothy Whipple | Iowa Association of Municipal Utilities | Undecided | GA88 |
| Robert Hartwig | Iowa Bankers Association | Supporting | GA88 |
| Sharon Presnall | Iowa Bankers Association | Supporting | 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 |
| Dane Schumann | Iowa Chapter of the Association of Public Safety Communications Officials (APCO) | Undecided | GA88 |
| Dane Schumann | Iowa Chapter of the Association of Public Safety Communications Officials (APCO) | Opposing | GA88 |
| Maddie Wilcox | Iowa Chapter of the Association of Public Safety Communications Officials (APCO) | Undecided | GA88 |
| Maddie Wilcox | Iowa Chapter of the Association of Public Safety Communications Officials (APCO) | Opposing | GA88 |
| Threase Harms | Iowa Chapter of the Association of Public Safety Communications Officials (APCO) | Undecided | GA88 |
| Dane Schumann | Iowa Chapter of the National Emergency Number Association (NENA) | Undecided | GA88 |
| Dane Schumann | Iowa Chapter of the National Emergency Number Association (NENA) | Opposing | GA88 |
| Maddie Wilcox | Iowa Chapter of the National Emergency Number Association (NENA) | Undecided | GA88 |
| Maddie Wilcox | Iowa Chapter of the National Emergency Number Association (NENA) | Opposing | GA88 |
| Threase Harms | Iowa Chapter of the National Emergency Number Association (NENA) | Undecided | GA88 |
| Kelly Meyers | Iowa County Attorneys Association | Opposing | GA88 |
| Susan Cameron Daemen | Iowa County Attorneys Association | Opposing | GA88 |
| Dane Schumann | Iowa Emergency Management Association | Opposing | GA88 |
| Dane Schumann | Iowa Emergency Management Association | Undecided | GA88 |
| Maddie Wilcox | Iowa Emergency Management Association | Opposing | GA88 |
| Maddie Wilcox | Iowa Emergency Management Association | Undecided | GA88 |
| Threase Harms | Iowa Emergency Management Association | Opposing | GA88 |
| Threase Harms | Iowa Emergency Management Association | Undecided | GA88 |
| Eric Goranson | Iowa Emergency Medical Services Association | Undecided | GA88 |
| Karla Fultz McHenry | Iowa Emergency Medical Services Association | Undecided | GA88 |
| Don Petersen | Iowa Farm Bureau Federation | Supporting | GA88 |
| Kevin Kuhle | Iowa Farm Bureau Federation | Supporting | GA88 |
| Matthew Steinfeldt | Iowa Farm Bureau Federation | Supporting | GA88 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Opposing | GA88 |
| Erika Eckley | Iowa Hospital Association | Undecided | GA88 |
| Erin Cubit | Iowa Hospital Association | Undecided | GA88 |
| J. Norris | Iowa Hospital Association | Undecided | GA88 |
| Kim Murphy | Iowa Hospital Association | Undecided | GA88 |
| Maureen Keehnle | Iowa Hospital Association | Undecided | GA88 |
| Alan Kemp | Iowa League of Cities | Opposing | GA88 |
| Daniel Stalder | Iowa League of Cities | Opposing | GA88 |
| Matt McKinney | Iowa League of Cities | Opposing | GA88 |
| RG Schwarm | Iowa League of Cities | Opposing | GA88 |
| Robert Palmer | Iowa League of Cities | Opposing | GA88 |
| Amy Campbell | Iowa Library Association (ILA) | Opposing | GA88 |
| Craig Patterson | Iowa Library Association (ILA) | Opposing | GA88 |
| Gary Grant | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Opposing | GA88 |
| Larry Murphy | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Opposing | GA88 |
| Christopher Rants | Iowa Professional Fire Fighters | Opposing | GA88 |
| John Cacciatore | Iowa Professional Fire Fighters | Opposing | GA88 |
| Lon Anderson | Iowa Professional Fire Fighters | Opposing | GA88 |
| Amy Campbell | Iowa Public Transit Association (IPT) | Opposing | GA88 |
| Craig Patterson | Iowa Public Transit Association (IPT) | Opposing | GA88 |
| Christopher Rants | Iowa Retired School Personnel Association | Undecided | GA88 |
| John Cacciatore | Iowa Retired School Personnel Association | Undecided | GA88 |
| Mike Heller | Iowa State Association of Assessors | Opposing | GA88 |
| Mike Heller | Iowa State Association of Assessors | Undecided | GA88 |
| Paula Feltner | Iowa State Association of Assessors | Opposing | GA88 |
| Paula Feltner | Iowa State Association of Assessors | Undecided | GA88 |
| Jamie Cashman | Iowa State Association of Counties | Opposing | GA88 |
| Kristi Harshbarger | Iowa State Association of Counties | Opposing | GA88 |
| Lucas Beenken | Iowa State Association of Counties | Opposing | GA88 |
| William Peterson | Iowa State Association of Counties | Opposing | GA88 |
| Jamie Cashman | Iowa State Association of County Supervisors | Opposing | GA88 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Opposing | GA88 |
| Lucas Beenken | Iowa State Association of County Supervisors | Opposing | GA88 |
| William Peterson | Iowa State Association of County Supervisors | Opposing | GA88 |
| Michael Gronstal | Iowa State Building and Construction Trades | Opposing | GA88 |
| Bradley Hudson | Iowa State Education Association | Opposing | GA88 |
| Melissa Peterson | Iowa State Education Association | Opposing | GA88 |
| Mike Heller | Iowa State Police Association | Withdrawn | GA88 |
| Mike Heller | Iowa State Police Association | Opposing | GA88 |
| Paula Feltner | Iowa State Police Association | Opposing | GA88 |
| Kelly Meyers | Iowa State Sheriffs' & Deputies' Association | Opposing | GA88 |
| Susan Cameron Daemen | Iowa State Sheriffs' & Deputies' Association | Opposing | GA88 |
| Mike Heller | Iowa Talented and Gifted Association | Undecided | GA88 |
| Paula Feltner | Iowa Talented and Gifted Association | Undecided | GA88 |
| Jennifer Kingland | Iowa Taxpayers Association | Supporting | GA88 |
| Tom Sands | Iowa Taxpayers Association | Supporting | GA88 |
| Ernie Adkison | Iowans for Tax Relief | Supporting | GA88 |
| Victoria Sinclair | Iowans for Tax Relief | Supporting | GA88 |
| Gary Grant | Linn County Board of Supervisors | Opposing | GA88 |
| Larry Murphy | Linn County Board of Supervisors | Opposing | GA88 |
| Meghan Malloy | Linn County Board of Supervisors | Opposing | GA88 |
| Ben Hammes | Master Builders of Iowa | Undecided | GA88 |
| Chad Kleppe | Master Builders of Iowa | Undecided | GA88 |
| Julie Smith | Master Builders of Iowa | Undecided | GA88 |
| David Adelman | Metropolitan Coalition | Opposing | GA88 |
| Frank Chiodo | Metropolitan Coalition | Undecided | GA88 |
| Frank Chiodo | Metropolitan Coalition | Opposing | GA88 |
| Matt Hinch | Metropolitan Coalition | Undecided | GA88 |
| Matt Hinch | Metropolitan Coalition | Opposing | GA88 |
| Sara Allen | Metropolitan Coalition | Undecided | GA88 |
| Sara Allen | Metropolitan Coalition | Opposing | GA88 |
| Matt McKinney | Municipal Fire & Police Retirement System of Iowa (MFPRSI) | Opposing | GA88 |
| RG Schwarm | Municipal Fire & Police Retirement System of Iowa (MFPRSI) | Opposing | GA88 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Supporting | GA88 |
| Emily Piper | Piper Sandler | Opposing | GA88 |
| Brian Johnson | Polk County - Board of Supervisors | Opposing | GA88 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| Tyler Power | Quad Cities Chamber of Commerce | Opposing | GA88 |
| Jim Romar | Teamsters Local 238 | Opposing | GA88 |
| Gary Grant | Urban County Coalition | Opposing | GA88 |
| Larry Murphy | Urban County Coalition | Opposing | GA88 |
| Meghan Malloy | Urban County Coalition | Opposing | GA88 |
| R. Bruce Beeston | Veterans National Recovery Center | Undecided | GA88 |