| David Scott | American Council of Engineering Companies | Supporting | GA88 |
| Drew Kamp | Ames Chamber of Commerce | Undecided | GA88 |
| Sandra Conlin | Associated Builders & Contractors of Iowa | Supporting | GA88 |
| David Adelman | Associated General Contractors of Iowa | Supporting | GA88 |
| Frank Chiodo | Associated General Contractors of Iowa | Supporting | GA88 |
| Matt Hinch | Associated General Contractors of Iowa | Supporting | GA88 |
| Scott Newhard | Associated General Contractors of Iowa | Supporting | GA88 |
| Carolann Jensen | Board of Regents, State of Iowa | Opposing | GA88 |
| Carolann Jensen | Board of Regents, State of Iowa | Undecided | GA88 |
| Jennifer Harbison | Board of Regents, State of Iowa | Opposing | GA88 |
| Jennifer Harbison | Board of Regents, State of Iowa | Undecided | GA88 |
| Keith Saunders | Board of Regents, State of Iowa | Opposing | GA88 |
| Keith Saunders | Board of Regents, State of Iowa | Undecided | GA88 |
| Mary Braun | Board of Regents, State of Iowa | Opposing | GA88 |
| Mary Braun | Board of Regents, State of Iowa | Undecided | GA88 |
| Barbra Solberg | Cedar Rapids Metro Economic Alliance | Supporting | GA88 |
| Thomas Jochum | Central Iowa Building Construction Trades Council | Opposing | GA88 |
| Thomas Jochum | Central Iowa Building Construction Trades Council | Undecided | GA88 |
| Jon Murphy | City of Cedar Falls | Undecided | GA88 |
| Tom Cope | City of Cedar Falls | Undecided | GA88 |
| Gary Grant | City of Cedar Rapids | Undecided | GA88 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA88 |
| Meghan Malloy | City of Cedar Rapids | Undecided | GA88 |
| Jon Murphy | City of Coralville | Undecided | GA88 |
| Tom Cope | City of Coralville | Undecided | GA88 |
| David Adelman | Des Moines International Airport | Supporting | GA88 |
| Frank Chiodo | Des Moines International Airport | Supporting | GA88 |
| Matt Hinch | Des Moines International Airport | Supporting | GA88 |
| Sara Allen | Des Moines International Airport | Supporting | GA88 |
| Maddie Wilcox | Des Moines Water Works | Undecided | GA88 |
| Threase Harms | Des Moines Water Works | Undecided | GA88 |
| Christopher Rants | Design Build Institute of America - Mid-American Region c/o MultiState Associate | Opposing | GA88 |
| John Cacciatore | Design Build Institute of America - Mid-American Region c/o MultiState Associate | Opposing | GA88 |
| Andrea Woodard | Greater Des Moines Partnership | Undecided | GA88 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA88 |
| Dustin Miller | Greater Des Moines Partnership | Undecided | GA88 |
| Katie Graham | Greater Des Moines Partnership | Undecided | GA88 |
| Paula Dierenfeld | Greater Des Moines Partnership | Undecided | GA88 |
| Maddie Wilcox | Grow Clinton County | Undecided | GA88 |
| Threase Harms | Grow Clinton County | Undecided | GA88 |
| James Piazza, Jr. | Heavy Highway Contractors Association | Opposing | GA88 |
| Jay Iverson | Home Builders Association of Iowa | Opposing | GA88 |
| Maddie Wilcox | IBEW Iowa State Conference | Opposing | GA88 |
| Threase Harms | IBEW Iowa State Conference | Opposing | GA88 |
| Thomas Jochum | International Union of Operating Engineers-Local 234 | Opposing | GA88 |
| Thomas Jochum | International Union of Operating Engineers-Local 234 | Undecided | GA88 |
| Michael McCarthy | Iowa Alliance For Retired Americans | Opposing | GA88 |
| Michael Triplett | Iowa Alliance of Surety Companies | Undecided | GA88 |
| Timothy Whipple | Iowa Association of Municipal Utilities | Supporting | GA88 |
| Emily Piper | Iowa Association of School Boards | Undecided | GA88 |
| Phil Jeneary | Iowa Association of School Boards | Undecided | GA88 |
| Brad Epperly | Iowa Chamber Alliance | Supporting | GA88 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA88 |
| Dustin Miller | Iowa Chamber Alliance | Supporting | GA88 |
| Dustin Miller | Iowa Chamber Alliance | Undecided | GA88 |
| Katie Graham | Iowa Chamber Alliance | Supporting | GA88 |
| Katie Graham | Iowa Chamber Alliance | Undecided | GA88 |
| Paula Dierenfeld | Iowa Chamber Alliance | Supporting | GA88 |
| Paula Dierenfeld | Iowa Chamber Alliance | Undecided | GA88 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Supporting | GA88 |
| Brad Epperly | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Dustin Miller | Iowa Chapter, American Institute of Architects | Supporting | GA88 |
| Dustin Miller | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Katie Graham | Iowa Chapter, American Institute of Architects | Supporting | GA88 |
| Katie Graham | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Supporting | GA88 |
| Paula Dierenfeld | Iowa Chapter, American Institute of Architects | Undecided | GA88 |
| Doug Struyk | Iowa Competitive Bidding Alliance, Inc. | Opposing | GA88 |
| Jennifer Dorman | Iowa Competitive Bidding Alliance, Inc. | Opposing | GA88 |
| Jim Carney | Iowa Competitive Bidding Alliance, Inc. | Opposing | GA88 |
| David Scott | Iowa Engineering Society | Supporting | GA88 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Opposing | GA88 |
| Julianne Frosolone | Iowa Federation of Labor, AFL-CIO | Opposing | GA88 |
| Peter Hird | Iowa Federation of Labor, AFL-CIO | Opposing | GA88 |
| David Scott | Iowa Good Roads Association | Supporting | GA88 |
| Abhay Nadipuram | Iowa Hospital Association | Undecided | GA88 |
| Erin Cubit | Iowa Hospital Association | Undecided | GA88 |
| Kim Murphy | Iowa Hospital Association | Undecided | GA88 |
| Maureen Keehnle | Iowa Hospital Association | Undecided | GA88 |
| Nicole Proesch | Iowa Hospital Association | Undecided | GA88 |
| Alan Kemp | Iowa League of Cities | Supporting | GA88 |
| Daniel Stalder | Iowa League of Cities | Supporting | GA88 |
| Robert Palmer | Iowa League of Cities | Supporting | GA88 |
| Emily Piper | Iowa Rural Water Association | Undecided | GA88 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA88 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA88 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA88 |
| William Peterson | Iowa State Association of Counties | Undecided | GA88 |
| Jamie Cashman | Iowa State Association of County Supervisors | Undecided | GA88 |
| Kristi Harshbarger | Iowa State Association of County Supervisors | Undecided | GA88 |
| Lucas Beenken | Iowa State Association of County Supervisors | Undecided | GA88 |
| William Peterson | Iowa State Association of County Supervisors | Undecided | GA88 |
| Michael Gronstal | Iowa State Building and Construction Trades | Opposing | GA88 |
| Dylan Gramlich | Laborers International Union of North America | Opposing | GA88 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA88 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA88 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA88 |
| Ben Hammes | Master Builders of Iowa | Supporting | GA88 |
| Chad Kleppe | Master Builders of Iowa | Supporting | GA88 |
| Julie Smith | Master Builders of Iowa | Supporting | GA88 |
| Kellie Paschke | Master Builders of Iowa | Supporting | GA88 |
| Troy Skinner | Master Builders of Iowa | Supporting | GA88 |
| Brian Johnson | Mechanical Contractors Association of Iowa (MCAI) | Opposing | GA88 |
| Christopher Rants | Mechanical Contractors Association of Iowa (MCAI) | Opposing | GA88 |
| Justin Hupfer | Mechanical Contractors Association of Iowa (MCAI) | Opposing | GA88 |
| David Adelman | Metropolitan Coalition | Undecided | GA88 |
| Frank Chiodo | Metropolitan Coalition | Undecided | GA88 |
| Matt Hinch | Metropolitan Coalition | Undecided | GA88 |
| Sara Allen | Metropolitan Coalition | Undecided | GA88 |
| Kate Walton | Missouri River Energy Services | Undecided | GA88 |
| Kersten Johnson | Missouri River Energy Services | Undecided | GA88 |
| Matt Eide | Missouri River Energy Services | Undecided | GA88 |
| Brian Johnson | NECA - Iowa (NEC) | Opposing | GA88 |
| Christopher Rants | NECA - Iowa (NEC) | Opposing | GA88 |
| Justin Hupfer | NECA - Iowa (NEC) | Opposing | GA88 |
| Charlotte Eby | North Central States Regional Council of Carpenters | Opposing | GA88 |
| Felicia Hilton | North Central States Regional Council of Carpenters | Opposing | GA88 |
| Christopher Rants | Plumbers and Steam Fitters Local 33 | Opposing | GA88 |
| John Cacciatore | Plumbers and Steam Fitters Local 33 | Opposing | GA88 |
| Brian Johnson | Polk County - Board of Supervisors | Opposing | GA88 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA88 |
| David Adelman | Sheet Metal Contractors of Iowa | Undecided | GA88 |
| Frank Chiodo | Sheet Metal Contractors of Iowa | Undecided | GA88 |
| Matt Hinch | Sheet Metal Contractors of Iowa | Undecided | GA88 |
| Sara Allen | Sheet Metal Contractors of Iowa | Undecided | GA88 |
| David Scott | Society of Land Surveyors of Iowa | Supporting | GA88 |
| Gary Grant | Urban County Coalition | Undecided | GA88 |
| Larry Murphy | Urban County Coalition | Undecided | GA88 |
| Meghan Malloy | Urban County Coalition | Undecided | GA88 |
| Jeffrey Boeyink | Weitz Company | Supporting | GA88 |