| Morgan Miller | AFSCME Iowa Council 61 | Opposing | GA87 |
| Thomas Jochum | Central Iowa Building Construction Trades Council | Opposing | GA87 |
| Doug Struyk | City of Iowa City | Undecided | GA87 |
| Jennifer Dorman | City of Iowa City | Undecided | GA87 |
| Jim Carney | City of Iowa City | Undecided | GA87 |
| Doug Struyk | City of Waukee | Undecided | GA87 |
| Jennifer Dorman | City of Waukee | Undecided | GA87 |
| Jim Carney | City of Waukee | Undecided | GA87 |
| Greg Ploeger | Greater Des Moines Heating & Cooling Association | Opposing | GA87 |
| Eric Goranson | Greater Iowa Apartment Association | Undecided | GA87 |
| Karla Fultz McHenry | Greater Iowa Apartment Association | Undecided | GA87 |
| Michael Triplett | Greater Iowa Apartment Association | Undecided | GA87 |
| Dane Schumann | IBEW Iowa State Conference | Opposing | GA87 |
| Dane Schumann | IBEW Iowa State Conference | Undecided | GA87 |
| Emily Hockins | IBEW Iowa State Conference | Opposing | GA87 |
| Emily Hockins | IBEW Iowa State Conference | Undecided | GA87 |
| Threase Harms | IBEW Iowa State Conference | Opposing | GA87 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA87 |
| Thomas Jochum | International Union of Operating Engineers-Local 234 | Opposing | GA87 |
| Greg Ploeger | Iowa Alliance for Fair Competition | Opposing | GA87 |
| Jim Obradovich | Iowa Association of Building Officials | Undecided | GA87 |
| Pete McRoberts | Iowa Association of Building Officials | Undecided | GA87 |
| Robert Mulqueen | Iowa Association of Building Officials | Undecided | GA87 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Undecided | GA87 |
| Dustin Miller | Iowa Association of Electric Cooperatives | Undecided | GA87 |
| Paula Dierenfeld | Iowa Association of Electric Cooperatives | Undecided | GA87 |
| Deborah Thompson | Iowa Dept. of Public Health | Undecided | GA87 |
| Amber Markham | Iowa Dept. of Public Safety | Undecided | GA87 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Opposing | GA87 |
| Brad Epperly | Iowa Geothermal Association | Undecided | GA87 |
| Dustin Miller | Iowa Geothermal Association | Undecided | GA87 |
| Paula Dierenfeld | Iowa Geothermal Association | Undecided | GA87 |
| Andrew Lietzow | Iowa Landlord Association | Supporting | GA87 |
| Alan Kemp | Iowa League of Cities | Undecided | GA87 |
| Lindsey McCune | Iowa League of Cities | Undecided | GA87 |
| Robert Palmer | Iowa League of Cities | Undecided | GA87 |
| Andrew Lietzow | Iowa Real Estate Investors Association | Supporting | GA87 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA87 |
| Jennifer Dorman | Iowa State Bar Association | Undecided | GA87 |
| Jim Carney | Iowa State Bar Association | Undecided | GA87 |
| tom fey | Iowa State Building and Construction Trades Council | Opposing | GA87 |
| Brad Epperly | Iowa Water Well Association | Undecided | GA87 |
| Dustin Miller | Iowa Water Well Association | Undecided | GA87 |
| Paula Dierenfeld | Iowa Water Well Association | Undecided | GA87 |
| Erich Schmidt | Laborers International Union of North America | Opposing | GA87 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Opposing | GA87 |
| Craig Walter | Mechanical Contractors Association of Iowa (MCAI) | Opposing | GA87 |
| Brian Johnson | NECA - Iowa (NEC) | Opposing | GA87 |
| Craig Walter | NECA - Iowa (NEC) | Opposing | GA87 |
| Christopher Rants | Plumbers and Steam Fitters Local 33 | Opposing | GA87 |
| Christopher Rants | Plumbers and Steam Fitters Local 33 | Undecided | GA87 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Opposing | GA87 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Undecided | GA87 |
| Eric Goranson | Plumbing Heating & Cooling Contractors of IA | Opposing | GA87 |
| Karla Fultz McHenry | Plumbing Heating & Cooling Contractors of IA | Opposing | GA87 |
| Michael Triplett | Plumbing Heating & Cooling Contractors of IA | Opposing | GA87 |
| David Adelman | Sheet Metal Contractors of Iowa | Undecided | GA87 |
| Frank Chiodo | Sheet Metal Contractors of Iowa | Undecided | GA87 |
| Matt Hinch | Sheet Metal Contractors of Iowa | Undecided | GA87 |
| Sara Allen | Sheet Metal Contractors of Iowa | Undecided | GA87 |