| David Scott | American Council of Engineering Companies | Undecided | GA89 |
| Jon Murphy | American Planning Association Iowa Chapter | Opposing | GA89 |
| Tom Cope | American Planning Association Iowa Chapter | Opposing | GA89 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA89 |
| Kate Hansen | Center for Rural Affairs | Opposing | GA89 |
| Jon Murphy | City of Cedar Falls | Opposing | GA89 |
| Tom Cope | City of Cedar Falls | Opposing | GA89 |
| Gary Grant | City of Cedar Rapids | Opposing | GA89 |
| Gary Grant | City of Cedar Rapids | Withdrawn | GA89 |
| Gary Grant | City of Cedar Rapids | Undecided | GA89 |
| Larry Murphy | City of Cedar Rapids | Opposing | GA89 |
| Larry Murphy | City of Cedar Rapids | Withdrawn | GA89 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA89 |
| Meghan Malloy | City of Cedar Rapids | Opposing | GA89 |
| Meghan Malloy | City of Cedar Rapids | Withdrawn | GA89 |
| Meghan Malloy | City of Cedar Rapids | Undecided | GA89 |
| Jon Murphy | City of Coralville | Opposing | GA89 |
| Tom Cope | City of Coralville | Opposing | GA89 |
| Doug Struyk | City of Des Moines | Opposing | GA89 |
| Jen Schulte | City of Des Moines | Opposing | GA89 |
| Jennifer Dorman | City of Des Moines | Opposing | GA89 |
| Jim Carney | City of Des Moines | Opposing | GA89 |
| Doug Struyk | City of Iowa City | Opposing | GA89 |
| Jennifer Dorman | City of Iowa City | Opposing | GA89 |
| Jim Carney | City of Iowa City | Opposing | GA89 |
| Sydney Gangestad | City of West Des Moines | Undecided | GA89 |
| Tim Coonan | City of West Des Moines | Undecided | GA89 |
| Jim Obradovich | Conservation Districts of Iowa | Opposing | GA89 |
| Robert Mulqueen | Conservation Districts of Iowa | Opposing | GA89 |
| Joseph Buffington | County Planning and Zoning Officials of Iowa | Opposing | GA89 |
| Joseph Buffington | County Planning and Zoning Officials of Iowa | Undecided | GA89 |
| Jake Highfill | Home Builders Association of Iowa | Supporting | GA89 |
| Jay Iverson | Home Builders Association of Iowa | Supporting | GA89 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| John Davis | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Steffi Lee | Iowa Association of Business and Industry (ABI) | Supporting | GA89 |
| Jon Murphy | Iowa Association of Councils of Governments | Opposing | GA89 |
| Tom Cope | Iowa Association of Councils of Governments | Opposing | GA89 |
| Alex Cutchey | Iowa Association of Municipal Utilities | Undecided | GA89 |
| Jennifer Kingland | Iowa Association of Realtors | Undecided | GA89 |
| Julie Smith | Iowa Association of Water Agencies | Undecided | GA89 |
| Mike Rozenboom | Iowa Bankers Association | Undecided | GA89 |
| Sharon Presnall | Iowa Bankers Association | Undecided | GA89 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Opposing | GA89 |
| Todd Coffelt | Iowa Dept. of Natural Resources | Undecided | GA89 |
| Todd Coffelt | Iowa Dept. of Natural Resources | Withdrawn | GA89 |
| Todd Coffelt | Iowa Dept. of Natural Resources | Supporting | GA89 |
| Deanna Triplett | Iowa Economic Development Authority | Undecided | GA89 |
| David Scott | Iowa Engineering Society | Undecided | GA89 |
| Chip Baltimore | Iowa Environmental Council | Opposing | GA89 |
| Kristin Hanks-Bents | Iowa Finance Authority | Undecided | GA89 |
| Blake DeRouchey | Iowa Homeland Security & Emergency Management Div. | Undecided | GA89 |
| Alan Kemp | Iowa League of Cities | Opposing | GA89 |
| Daniel Stalder | Iowa League of Cities | Opposing | GA89 |
| Matt McKinney | Iowa League of Cities | Opposing | GA89 |
| RG Schwarm | Iowa League of Cities | Opposing | GA89 |
| Robert Palmer | Iowa League of Cities | Opposing | GA89 |
| Andy Conlin | Iowa Manufactured Housing Association | Supporting | GA89 |
| Jamie Cashman | Iowa State Association of Counties | Opposing | GA89 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA89 |
| Kristi Harshbarger | Iowa State Association of Counties | Opposing | GA89 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA89 |
| Lucas Beenken | Iowa State Association of Counties | Opposing | GA89 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA89 |
| William Peterson | Iowa State Association of Counties | Opposing | GA89 |
| William Peterson | Iowa State Association of Counties | Undecided | GA89 |
| Jamie Cashman | Iowa State Association of County Supervisors | Opposing | GA89 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA89 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Opposing | GA89 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA89 |
| Lucas Beenken | Iowa State Association of County Supervisors | Opposing | GA89 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA89 |
| William Peterson | Iowa State Association of County Supervisors | Opposing | GA89 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA89 |
| David Scott | Iowa Water Well Association | Undecided | GA89 |
| Gary Grant | Linn County Board of Supervisors | Opposing | GA89 |
| Gary Grant | Linn County Board of Supervisors | Withdrawn | GA89 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA89 |
| Larry Murphy | Linn County Board of Supervisors | Opposing | GA89 |
| Larry Murphy | Linn County Board of Supervisors | Withdrawn | GA89 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA89 |
| Meghan Malloy | Linn County Board of Supervisors | Opposing | GA89 |
| Meghan Malloy | Linn County Board of Supervisors | Withdrawn | GA89 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA89 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA89 |
| Kelly Meyers | Marion County Board of Supervisors | Undecided | GA89 |
| Logan Murray | Marion County Board of Supervisors | Undecided | GA89 |
| Troy Skinner | Marion County Board of Supervisors | Undecided | GA89 |
| Ben Hammes | Master Builders of Iowa | Undecided | GA89 |
| Julie Smith | Master Builders of Iowa | Undecided | GA89 |
| David Adelman | Metropolitan Coalition | Undecided | GA89 |
| Frank Chiodo | Metropolitan Coalition | Undecided | GA89 |
| Lillie Brady | Metropolitan Coalition | Undecided | GA89 |
| Matt Hinch | Metropolitan Coalition | Undecided | GA89 |
| Sara Allen | Metropolitan Coalition | Undecided | GA89 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA89 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA89 |
| Gary Grant | Urban County Coalition | Opposing | GA89 |
| Gary Grant | Urban County Coalition | Withdrawn | GA89 |
| Gary Grant | Urban County Coalition | Undecided | GA89 |
| Larry Murphy | Urban County Coalition | Opposing | GA89 |
| Larry Murphy | Urban County Coalition | Withdrawn | GA89 |
| Larry Murphy | Urban County Coalition | Undecided | GA89 |
| Meghan Malloy | Urban County Coalition | Opposing | GA89 |
| Meghan Malloy | Urban County Coalition | Withdrawn | GA89 |
| Meghan Malloy | Urban County Coalition | Undecided | GA89 |
| Brad Epperly | res | Undecided | GA89 |
| Dustin Miller | res | Undecided | GA89 |