| David Scott | American Council of Engineering Companies | Opposing | GA87 |
| David Scott | American Water Works Association | Opposing | GA87 |
| Drew Kamp | Ames Chamber of Commerce | Undecided | GA87 |
| Gary Grant | Cedar Rapids Aiport | Opposing | GA87 |
| Larry Murphy | Cedar Rapids Aiport | Opposing | GA87 |
| Meghan Malloy | Cedar Rapids Aiport | Opposing | GA87 |
| Matt Eide | City of Cedar Falls | Undecided | GA87 |
| Gary Grant | City of Cedar Rapids | Opposing | GA87 |
| Larry Murphy | City of Cedar Rapids | Opposing | GA87 |
| Meghan Malloy | City of Cedar Rapids | Opposing | GA87 |
| Brice Oakley | City of Coralville | Opposing | GA87 |
| Don Avenson | City of Coralville | Opposing | GA87 |
| Tom Cope | City of Coralville | Opposing | GA87 |
| Doug Struyk | City of Des Moines | Opposing | GA87 |
| Jen Schulte | City of Des Moines | Opposing | GA87 |
| Jim Carney | City of Des Moines | Opposing | GA87 |
| Shannon Henson | City of Des Moines | Opposing | GA87 |
| Brice Oakley | City of West Des Moines | Opposing | GA87 |
| Don Avenson | City of West Des Moines | Opposing | GA87 |
| Tom Cope | City of West Des Moines | Opposing | GA87 |
| David Adelman | Des Moines International Airport | Undecided | GA87 |
| Frank Chiodo | Des Moines International Airport | Undecided | GA87 |
| Matt Hinch | Des Moines International Airport | Undecided | GA87 |
| Sara Allen | Des Moines International Airport | Undecided | GA87 |
| Andrea Woodard | Greater Des Moines Partnership | Opposing | GA87 |
| Andrea Woodard | Greater Des Moines Partnership | Undecided | GA87 |
| Brad Epperly | Greater Des Moines Partnership | Opposing | GA87 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA87 |
| Dustin Miller | Greater Des Moines Partnership | Opposing | GA87 |
| Dustin Miller | Greater Des Moines Partnership | Undecided | GA87 |
| Joe Murphy | Greater Des Moines Partnership | Opposing | GA87 |
| Joe Murphy | Greater Des Moines Partnership | Undecided | GA87 |
| Paige Thorson | Greater Des Moines Partnership | Opposing | GA87 |
| Paige Thorson | Greater Des Moines Partnership | Undecided | GA87 |
| Paula Dierenfeld | Greater Des Moines Partnership | Opposing | GA87 |
| Paula Dierenfeld | Greater Des Moines Partnership | Undecided | GA87 |
| Amy Campbell | Iowa Association of County Conservation Boards | Undecided | GA87 |
| Craig Patterson | Iowa Association of County Conservation Boards | Undecided | GA87 |
| Julie Smith | Iowa Association of Municipal Utilities | Opposing | GA87 |
| Timothy Whipple | Iowa Association of Municipal Utilities | Opposing | GA87 |
| Linda Kinman | Iowa Association of Water Agencies | Opposing | GA87 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA87 |
| Dustin Miller | Iowa Chamber Alliance | Undecided | GA87 |
| John Stineman | Iowa Chamber Alliance | Undecided | GA87 |
| Paige Thorson | Iowa Chamber Alliance | Undecided | GA87 |
| Paula Dierenfeld | Iowa Chamber Alliance | Undecided | GA87 |
| David Scott | Iowa Engineering Society | Opposing | GA87 |
| Kerri Johannsen | Iowa Environmental Council | Opposing | GA87 |
| Ralph Rosenberg | Iowa Environmental Council | Opposing | GA87 |
| Alan Kemp | Iowa League of Cities | Opposing | GA87 |
| Alan Kemp | Iowa League of Cities | Undecided | GA87 |
| Lindsey McCune | Iowa League of Cities | Opposing | GA87 |
| Lindsey McCune | Iowa League of Cities | Undecided | GA87 |
| Robert Palmer | Iowa League of Cities | Opposing | GA87 |
| Robert Palmer | Iowa League of Cities | Undecided | GA87 |
| Amy Campbell | Iowa Library Association (ILA) | Undecided | GA87 |
| Craig Patterson | Iowa Library Association (ILA) | Undecided | GA87 |
| Kellie Paschke | Iowa Peace Officers Association | Undecided | GA87 |
| Troy Skinner | Iowa Peace Officers Association | Undecided | GA87 |
| Jim Obradovich | Iowa Public Airports Association | Opposing | GA87 |
| Amy Campbell | Iowa Public Transit Association (IPT) | Undecided | GA87 |
| Craig Patterson | Iowa Public Transit Association (IPT) | Undecided | GA87 |
| Emily Piper | Iowa Rural Water Association | Opposing | 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 |
| William Heckroth | Iowa State Association of County Supervisors | Opposing | GA87 |
| Mike Heller | Iowa State Police Association | Opposing | GA87 |
| Paula Feltner | Iowa State Police Association | Opposing | GA87 |
| Kelly Meyers | Iowa State Sheriffs' & Deputies' Association | Undecided | GA87 |
| Susan Cameron Daemen | Iowa State Sheriffs' & Deputies' Association | Undecided | GA87 |
| Gary Grant | Linn County Board of Supervisors | Withdrawn | GA87 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA87 |
| Larry Murphy | Linn County Board of Supervisors | Withdrawn | GA87 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA87 |
| Meghan Malloy | Linn County Board of Supervisors | Withdrawn | GA87 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA87 |
| David Adelman | Metropolitan Coalition | Undecided | GA87 |
| Frank Chiodo | Metropolitan Coalition | Undecided | GA87 |
| Matt Hinch | Metropolitan Coalition | Undecided | GA87 |
| Sara Allen | Metropolitan Coalition | Undecided | GA87 |
| Brian Johnson | Polk County - Board of Supervisors | Opposing | GA87 |
| Brian Johnson | Polk County - Board of Supervisors | Undecided | GA87 |
| Amy Campbell | Professional Developers of Iowa (PDI) | Undecided | GA87 |
| Craig Patterson | Professional Developers of Iowa (PDI) | Undecided | GA87 |
| Gary Grant | Urban County Coalition | Withdrawn | GA87 |
| Gary Grant | Urban County Coalition | Undecided | GA87 |
| Larry Murphy | Urban County Coalition | Withdrawn | GA87 |
| Larry Murphy | Urban County Coalition | Undecided | GA87 |
| Meghan Malloy | Urban County Coalition | Withdrawn | GA87 |
| Meghan Malloy | Urban County Coalition | Undecided | GA87 |