| David Scott | American Council of Engineering Companies | Undecided | GA90 |
| Brad Epperly | Ames Regional Economic Alliance | Undecided | GA90 |
| Casey Nickel | Ames Regional Economic Alliance | Undecided | GA90 |
| Dustin Miller | Ames Regional Economic Alliance | Undecided | GA90 |
| Chelsea Hoye | Des Moines Water Works | Supporting | GA90 |
| Nick Laning | Des Moines Water Works | Supporting | GA90 |
| Threase Harms | Des Moines Water Works | Supporting | GA90 |
| Andrea Woodard | Greater Des Moines Partnership | Undecided | GA90 |
| Brad Epperly | Greater Des Moines Partnership | Undecided | GA90 |
| Casey Nickel | Greater Des Moines Partnership | Undecided | GA90 |
| Dustin Miller | Greater Des Moines Partnership | Undecided | GA90 |
| Ryan Moon | Greater Des Moines Partnership | Undecided | GA90 |
| Brad Epperly | Iowa Chamber Alliance | Undecided | GA90 |
| Casey Nickel | Iowa Chamber Alliance | Undecided | GA90 |
| Dustin Miller | Iowa Chamber Alliance | Undecided | GA90 |
| Doug Struyk | Iowa Drainage District Association | Undecided | GA90 |
| Jennifer Dorman | Iowa Drainage District Association | Undecided | GA90 |
| Jim Carney | Iowa Drainage District Association | Undecided | GA90 |
| John Torbert | Iowa Drainage District Association | Undecided | GA90 |
| Mona Bond | Iowa Drainage District Association | Undecided | GA90 |
| Chelsea Hoye | Iowa Environmental Council | Supporting | GA90 |
| Threase Harms | Iowa Environmental Council | Supporting | GA90 |
| Chelsea Hoye | Iowa Farmers Union | Supporting | GA90 |
| Threase Harms | Iowa Farmers Union | Supporting | GA90 |
| Nichole Hansen | Iowa Finance Authority | Undecided | GA90 |
| Mike St. Clair | Iowa Land Title Association | Opposing | GA90 |
| Jamie Cashman | Iowa State Association of Counties | Undecided | GA90 |
| Kristi Harshbarger | Iowa State Association of Counties | Undecided | GA90 |
| Lucas Beenken | Iowa State Association of Counties | Undecided | GA90 |
| William Peterson | Iowa State Association of Counties | Undecided | GA90 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA90 |
| Jennifer Dorman | Iowa State Bar Association | Undecided | GA90 |
| Jim Carney | Iowa State Bar Association | Undecided | GA90 |
| John Hall | Marshalltown Area Chamber of Commerce | Undecided | GA90 |
| Brad Epperly | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Casey Nickel | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Dustin Miller | Quad Cities Chamber of Commerce | Undecided | GA90 |
| Ryan Sempf | Quad Cities Chamber of Commerce | Undecided | GA90 |
| David Scott | Society of Land Surveyors of Iowa | Undecided | GA90 |