| Amy Campbell | AARP Iowa | Supporting | GA88 |
| Brad Anderson | AARP Iowa | Supporting | GA88 |
| Craig Patterson | AARP Iowa | Supporting | GA88 |
| Sandra Conlin | Associated Builders & Contractors of Iowa | Undecided | GA88 |
| R. Bruce Beeston | HOA Reform Coaltion | Undecided | GA88 |
| Eric Goranson | Habitat for Humanity of Iowa | Undecided | GA88 |
| James Piazza, Jr. | Heavy Highway Contractors Association | Undecided | GA88 |
| Jay Iverson | Home Builders Association of Iowa | Opposing | GA88 |
| Jay Iverson | Home Builders Association of Iowa | Undecided | GA88 |
| David Adelman | Hubbell Realty Company | Undecided | GA88 |
| Frank Chiodo | Hubbell Realty Company | Undecided | GA88 |
| Matt Hinch | Hubbell Realty Company | Undecided | GA88 |
| Sara Allen | Hubbell Realty Company | Undecided | GA88 |
| Michael Triplett | Iowa Alliance of Surety Companies | Supporting | GA88 |
| Brad Hartkopf | 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 |
| Jennifer Kingland | Iowa Association of Realtors | Undecided | GA88 |
| Eric Tabor | Iowa Attorney General Dept. of Justice | Supporting | GA88 |
| Nathan Blake | Iowa Attorney General Dept. of Justice | Supporting | GA88 |
| Robert Hartwig | Iowa Bankers Association | Undecided | GA88 |
| Sharon Presnall | Iowa Bankers Association | Undecided | GA88 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Dustin Miller | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Katie Graham | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Doug Struyk | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA88 |
| Jennifer Dorman | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA88 |
| Jim Carney | Iowa Competitive Bidding Alliance, Inc. | Undecided | GA88 |
| Kelly Meyers | Iowa County Attorneys Association | Supporting | GA88 |
| Susan Cameron Daemen | Iowa County Attorneys Association | Supporting | GA88 |
| Sara Throener | Iowa Dept. of Inspections and Appeals | Undecided | GA88 |
| Amy McCoy | Iowa Dept. of Public Health | Undecided | GA88 |
| Frederick Haskins | Iowa Insurance Associates | Undecided | GA88 |
| Angela Davis | Iowa Lumber Association | Undecided | GA88 |
| Christopher Rants | Iowa Retired School Personnel Association | Supporting | GA88 |
| John Cacciatore | Iowa Retired School Personnel Association | Supporting | 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 |
| Ben Hammes | Master Builders of Iowa | Undecided | GA88 |
| Chad Kleppe | Master Builders of Iowa | Undecided | GA88 |
| Julie Smith | Master Builders of Iowa | Undecided | GA88 |
| Charlotte Eby | North Central States Regional Council of Carpenters | Supporting | GA88 |
| Taylor McDonald | North Central States Regional Council of Carpenters | Supporting | GA88 |
| Monica McCarthy | Older Iowans Legislature | Supporting | GA88 |
| Eric Goranson | Plumbing Heating & Cooling Contractors of IA | Undecided | GA88 |