| David Scott | American Council of Engineering Companies | Opposing | GA91 |
| Scott Newhard | Associated General Contractors of Iowa | Supporting | GA91 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA91 |
| Jacob Schrader | Central Iowa Water Works | Undecided | GA91 |
| Logan Murray | Central Iowa Water Works | Undecided | GA91 |
| Sydney Gangestad | Central Iowa Water Works | Undecided | GA91 |
| Clair Lewis | City of Bettendorf | Opposing | GA91 |
| Kate Walton | City of Bettendorf | Opposing | GA91 |
| Matt Eide | City of Bettendorf | Opposing | GA91 |
| Scott VanDeWoestyne | City of Davenport | Undecided | GA91 |
| Doug Struyk | City of Des Moines | Opposing | GA91 |
| Emilee Harris-Puricelli | City of Des Moines | Opposing | GA91 |
| Jen Schulte | City of Des Moines | Opposing | GA91 |
| Jennifer Dorman | City of Des Moines | Opposing | GA91 |
| Jim Carney | City of Des Moines | Opposing | GA91 |
| Doug Struyk | City of Iowa City | Undecided | GA91 |
| Jennifer Dorman | City of Iowa City | Undecided | GA91 |
| Jim Carney | City of Iowa City | Undecided | GA91 |
| Doug Struyk | City of Waukee | Opposing | GA91 |
| Doug Struyk | City of Waukee | Undecided | GA91 |
| Jennifer Dorman | City of Waukee | Opposing | GA91 |
| Jennifer Dorman | City of Waukee | Undecided | GA91 |
| Jim Carney | City of Waukee | Opposing | GA91 |
| Jim Carney | City of Waukee | Undecided | GA91 |
| Nathan Mueller | County Planning and Zoning Officials of Iowa | Undecided | GA91 |
| Brad Epperly | Developers Council | Supporting | GA91 |
| Casey Nickel | Developers Council | Supporting | GA91 |
| Dustin Miller | Developers Council | Supporting | GA91 |
| Michael Triplett | HNTB Corporation | Undecided | GA91 |
| Jake Highfill | Home Builders Association of Iowa | Supporting | GA91 |
| Jay Iverson | Home Builders Association of Iowa | Supporting | GA91 |
| Tony Phillips | Home Builders Association of Iowa | Supporting | GA91 |
| David Adelman | Hubbell Realty Company | Undecided | GA91 |
| Frank Chiodo | Hubbell Realty Company | Undecided | GA91 |
| Matt Hinch | Hubbell Realty Company | Undecided | GA91 |
| Paige Thorson | Hubbell Realty Company | Undecided | GA91 |
| Sara Allen | Hubbell Realty Company | Undecided | GA91 |
| Matt McKinney | Iowa Association of Water Agencies | Opposing | GA91 |
| RG Schwarm | Iowa Association of Water Agencies | Opposing | GA91 |
| Carolann Jensen | Iowa Board of Regents | Undecided | GA91 |
| Jason Chapman | Iowa Board of Regents | Undecided | GA91 |
| Jennifer Harbison | Iowa Board of Regents | Undecided | GA91 |
| Jillian Carlson | Iowa Board of Regents | Undecided | GA91 |
| Doug Struyk | Iowa Commercial Real Estate Association (ICREA) | Undecided | GA91 |
| Jennifer Dorman | Iowa Commercial Real Estate Association (ICREA) | Undecided | GA91 |
| Jim Carney | Iowa Commercial Real Estate Association (ICREA) | Undecided | GA91 |
| Lyle Brehm | Iowa County Engineers Association | Undecided | GA91 |
| Sara Throener | Iowa Department of Inspections, Appeals, and Licensing | Undecided | GA91 |
| Sarah Vanderploeg | Iowa Department of Inspections, Appeals, and Licensing | Undecided | GA91 |
| Todd Coffelt | Iowa Dept. of Natural Resources | Undecided | GA91 |
| Susan Fenton | Iowa Dept. of Transportation | Undecided | GA91 |
| Deanna Triplett | Iowa Economic Development Authority | Undecided | GA91 |
| Deanna Triplett | Iowa Finance Authority | Undecided | GA91 |
| Chelsea Hoye | Iowa League of Cities | Undecided | GA91 |
| Cody Carlson | Iowa League of Cities | Undecided | GA91 |
| Dustin Miller | Iowa Real Estate Developers Association | Supporting | GA91 |
| Emily Piper | Iowa Rural Water Association | Withdrawn | GA91 |
| Emily Piper | Iowa Rural Water Association | Opposing | GA91 |
| Clair Lewis | Iowa Section American Water Works Association | Opposing | GA91 |
| Kate Walton | Iowa Section American Water Works Association | Opposing | GA91 |
| Matt Eide | Iowa Section American Water Works Association | Opposing | GA91 |
| Andrea Woodard | Iowa State Association of Counties | Undecided | GA91 |
| Beth Manley | Iowa State Association of Counties | Undecided | GA91 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA91 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA91 |
| Andrea Woodard | Iowa State Association of County Supervisors | Undecided | GA91 |
| Beth Manley | Iowa State Association of County Supervisors | Undecided | GA91 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA91 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA91 |
| Catherine Pollard | Iowa Stormwater Education Partnership | Opposing | GA91 |
| Nick Laning | Iowa Stormwater Education Partnership | Opposing | GA91 |
| Threase Harms | Iowa Stormwater Education Partnership | Opposing | GA91 |
| Mona Bond | Manatts Inc. | Undecided | GA91 |
| Kellie Paschke | Marion County Board of Supervisors | Undecided | GA91 |
| Ben Hammes | Master Builders of Iowa | Supporting | GA91 |
| Logan Shine | Master Builders of Iowa | Supporting | GA91 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA91 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA91 |
| Gary Grant | Urban County Coalition | Undecided | GA91 |
| Larry Murphy | Urban County Coalition | Undecided | GA91 |
| Jake Ketzner | Urbandale Water Utility | Opposing | GA91 |
| Larry Blixt | Urbandale Water Utility | Opposing | GA91 |
| Nick Boeyink | Urbandale Water Utility | Opposing | GA91 |
| Clair Lewis | West Des Moines Water Works | Undecided | GA91 |
| Kate Walton | West Des Moines Water Works | Undecided | GA91 |
| Matt Eide | West Des Moines Water Works | Undecided | GA91 |