| Steven Van Steenhuyse | American Planning Association Iowa Chapter | Opposing | GA88 |
| Keith Saunders | Board of Regents, State of Iowa | Undecided | GA88 |
| Kristin Bauer | Board of Regents, State of Iowa | Undecided | GA88 |
| Mark Braun | Board of Regents, State of Iowa | Undecided | GA88 |
| Mary Braun | Board of Regents, State of Iowa | Undecided | 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 |
| Doug Struyk | City of Iowa City | Opposing | GA88 |
| Jennifer Dorman | City of Iowa City | Opposing | GA88 |
| Jim Carney | City of Iowa City | Opposing | GA88 |
| Dane Schumann | Grow Clinton County | Opposing | GA88 |
| Maddie Wilcox | Grow Clinton County | Opposing | GA88 |
| Threase Harms | Grow Clinton County | Opposing | GA88 |
| Jay Iverson | Home Builders Association of Iowa | Supporting | GA88 |
| Jay Iverson | Home Builders Association of Iowa | Undecided | GA88 |
| Jennifer Kingland | Iowa Association of Realtors | Supporting | 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 |
| Alan Kemp | Iowa League of Cities | Opposing | GA88 |
| Daniel Stalder | Iowa League of Cities | Opposing | GA88 |
| Robert Palmer | Iowa League of Cities | Opposing | 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 |
| Jim Obradovich | Landlords of Iowa | Supporting | GA88 |
| Robert Mulqueen | Landlords of Iowa | 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 |
| David Adelman | Metropolitan Coalition | Opposing | GA88 |
| Frank Chiodo | Metropolitan Coalition | Opposing | GA88 |
| Matt Hinch | Metropolitan Coalition | Opposing | GA88 |
| Sara Allen | Metropolitan Coalition | Opposing | GA88 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| Gary Grant | Urban County Coalition | Opposing | GA88 |
| Larry Murphy | Urban County Coalition | Opposing | GA88 |
| Meghan Malloy | Urban County Coalition | Opposing | GA88 |