| Steven Van Steenhuyse | American Planning Association Iowa Chapter | Opposing | GA87 |
| Drew Kamp | Ames Chamber of Commerce | Opposing | GA87 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Opposing | GA87 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Withdrawn | GA87 |
| Gary Grant | Cedar Rapids Metro Economic Alliance | Undecided | GA87 |
| Kate Walton | City of Cedar Falls | Opposing | GA87 |
| Matt Eide | City of Cedar Falls | Opposing | GA87 |
| Gary Grant | City of Cedar Rapids | Undecided | GA87 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA87 |
| Meghan Malloy | City of Cedar Rapids | Undecided | GA87 |
| Doug Struyk | City of Des Moines | Opposing | GA87 |
| Jen Schulte | City of Des Moines | Opposing | GA87 |
| Jennifer Dorman | City of Des Moines | Opposing | GA87 |
| Jim Carney | City of Des Moines | Opposing | GA87 |
| Doug Struyk | City of Iowa City | Opposing | GA87 |
| Doug Struyk | City of Iowa City | Undecided | GA87 |
| Jennifer Dorman | City of Iowa City | Opposing | GA87 |
| Jennifer Dorman | City of Iowa City | Undecided | GA87 |
| Jim Carney | City of Iowa City | Opposing | GA87 |
| Jim Carney | City of Iowa City | Undecided | GA87 |
| Doug Struyk | City of Waukee | Opposing | GA87 |
| Jennifer Dorman | City of Waukee | Opposing | GA87 |
| Jim Carney | City of Waukee | Opposing | GA87 |
| Julie Smith | City of West Des Moines | Opposing | GA87 |
| Tim Coonan | City of West Des Moines | Opposing | GA87 |
| Barry Gentry | Dubuque Area Chamber of Commerce | Opposing | GA87 |
| Henry Marquard | Genesis Health System | Opposing | GA87 |
| Steve Firman | Greater Cedar Valley Alliance | Opposing | GA87 |
| Andrea Woodard | Greater Des Moines Partnership | Opposing | GA87 |
| Brad Epperly | Greater Des Moines Partnership | Opposing | GA87 |
| Dustin Miller | Greater Des Moines Partnership | Opposing | GA87 |
| Joe Murphy | Greater Des Moines Partnership | Opposing | GA87 |
| Katie Graham | Greater Des Moines Partnership | Opposing | GA87 |
| Paula Dierenfeld | Greater Des Moines Partnership | Opposing | GA87 |
| Dane Schumann | Grow Clinton County | Undecided | GA87 |
| Emily Hockins | Grow Clinton County | Undecided | GA87 |
| Threase Harms | Grow Clinton County | Undecided | GA87 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Undecided | GA87 |
| Jessica Hyland | Iowa Association of Business and Industry (ABI) | Undecided | GA87 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Undecided | GA87 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Undecided | GA87 |
| Robert Hartwig | Iowa Bankers Association | Undecided | GA87 |
| Sharon Presnall | Iowa Bankers Association | Undecided | GA87 |
| Brad Epperly | Iowa Chamber Alliance | Opposing | GA87 |
| Dustin Miller | Iowa Chamber Alliance | Opposing | GA87 |
| John Stineman | Iowa Chamber Alliance | Opposing | GA87 |
| Katie Graham | Iowa Chamber Alliance | Opposing | GA87 |
| Paula Dierenfeld | Iowa Chamber Alliance | Opposing | GA87 |
| Pam Mackey-Taylor | Iowa Chapter of Sierra Club | Undecided | GA87 |
| Ryan Sempf | Iowa City Area Chamber of Commerce | Opposing | GA87 |
| Alan Kemp | Iowa League of Cities | Opposing | GA87 |
| Lindsey McCune | Iowa League of Cities | Opposing | GA87 |
| Robert Palmer | Iowa League of Cities | Opposing | GA87 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA87 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA87 |
| Katie Graham | Iowa Society of Certified Public Accountants | Undecided | GA87 |
| Paula Dierenfeld | Iowa Society of Certified Public Accountants | Undecided | GA87 |
| Jamie Cashman | Iowa State Association of Counties | Opposing | GA87 |
| Kristi Harshbarger | Iowa State Association of Counties | Opposing | GA87 |
| Lucas Beenken | Iowa State Association of Counties | Opposing | GA87 |
| William Peterson | Iowa State Association of Counties | Opposing | GA87 |
| Jamie Cashman | Iowa State Association of County Supervisors | Opposing | GA87 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Opposing | GA87 |
| Lucas Beenken | Iowa State Association of County Supervisors | Opposing | GA87 |
| William Peterson | Iowa State Association of County Supervisors | Opposing | 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 |
| David Adelman | Metropolitan Coalition | Opposing | GA87 |
| Frank Chiodo | Metropolitan Coalition | Opposing | GA87 |
| Matt Hinch | Metropolitan Coalition | Opposing | GA87 |
| Sara Allen | Metropolitan Coalition | Opposing | GA87 |
| Brian Johnson | Personal Interest-Brian Johnson | Undecided | GA87 |
| Brian Johnson | Polk County - Board of Supervisors | Undecided | GA87 |
| Craig Walter | Polk County - Board of Supervisors | Undecided | GA87 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Opposing | GA87 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Opposing | GA87 |
| Henry Marquard | Quad Cities Chamber of Commerce | Opposing | GA87 |