| Brad Epperly | BNSF Railway Co. | Opposing | GA88 |
| Dustin Miller | BNSF Railway Co. | Opposing | GA88 |
| Katie Graham | BNSF Railway Co. | Opposing | GA88 |
| Paula Dierenfeld | BNSF Railway Co. | Opposing | GA88 |
| Thomas Jochum | Central Iowa Building Construction Trades Council | Supporting | GA88 |
| Brad Epperly | Helena Agri-Enterprises, LLC | Opposing | GA88 |
| Dustin Miller | Helena Agri-Enterprises, LLC | Opposing | GA88 |
| Katie Graham | Helena Agri-Enterprises, LLC | Opposing | GA88 |
| Paula Dierenfeld | Helena Agri-Enterprises, LLC | Opposing | GA88 |
| Dane Schumann | IBEW Iowa State Conference | Supporting | GA88 |
| Dane Schumann | IBEW Iowa State Conference | Undecided | GA88 |
| Maddie Wilcox | IBEW Iowa State Conference | Supporting | GA88 |
| Maddie Wilcox | IBEW Iowa State Conference | Undecided | GA88 |
| Threase Harms | IBEW Iowa State Conference | Supporting | GA88 |
| Threase Harms | IBEW Iowa State Conference | Undecided | GA88 |
| Thomas Jochum | International Union of Operating Engineers-Local 234 | Supporting | GA88 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Opposing | GA88 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Opposing | GA88 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Opposing | GA88 |
| David Palmer | Iowa Association of Community College Trustees | Undecided | GA88 |
| Emily Shields | Iowa Association of Community College Trustees | Undecided | GA88 |
| James Kersten | Iowa Association of Community College Trustees | Undecided | GA88 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Dustin Miller | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Katie Graham | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Paula Dierenfeld | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Brad Epperly | Iowa Automobile Dealers Association | Opposing | GA88 |
| Dustin Miller | Iowa Automobile Dealers Association | Opposing | GA88 |
| Katie Graham | Iowa Automobile Dealers Association | Opposing | GA88 |
| Paula Dierenfeld | Iowa Automobile Dealers Association | Opposing | GA88 |
| Brad Epperly | Iowa Broadcasters Association | Opposing | GA88 |
| Dustin Miller | Iowa Broadcasters Association | Opposing | GA88 |
| Katie Graham | Iowa Broadcasters Association | Opposing | GA88 |
| Paula Dierenfeld | Iowa Broadcasters Association | Opposing | GA88 |
| James Kersten | Iowa Central Community College | Undecided | GA88 |
| Laura Hessburg | Iowa Coalition Against Domestic Violence | Supporting | GA88 |
| Brad Epperly | Iowa Collectors Association, Inc. | Opposing | GA88 |
| Dustin Miller | Iowa Collectors Association, Inc. | Opposing | GA88 |
| Katie Graham | Iowa Collectors Association, Inc. | Opposing | GA88 |
| Paula Dierenfeld | Iowa Collectors Association, Inc. | Opposing | GA88 |
| Charlie Wishman | Iowa Federation of Labor, AFL-CIO | Supporting | GA88 |
| Julianne Frosolone | Iowa Federation of Labor, AFL-CIO | Supporting | GA88 |
| Brad Epperly | Iowa Grocery Industry Association | Opposing | GA88 |
| Dustin Miller | Iowa Grocery Industry Association | Opposing | GA88 |
| Katie Graham | Iowa Grocery Industry Association | Opposing | GA88 |
| Paula Dierenfeld | Iowa Grocery Industry Association | Opposing | GA88 |
| Brad Epperly | Iowa Newspaper Association | Undecided | GA88 |
| Dustin Miller | Iowa Newspaper Association | Undecided | GA88 |
| Katie Graham | Iowa Newspaper Association | Undecided | GA88 |
| Paula Dierenfeld | Iowa Newspaper Association | Undecided | GA88 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Opposing | GA88 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Opposing | GA88 |
| Katie Graham | Iowa Society of Certified Public Accountants | Opposing | GA88 |
| Paula Dierenfeld | Iowa Society of Certified Public Accountants | Opposing | GA88 |
| Michael Gronstal | Iowa State Building and Construction Trades | Supporting | GA88 |
| Alexander Cutchey | Iowa Utilities Board | Withdrawn | GA88 |
| Alexander Cutchey | Iowa Utilities Board | Undecided | GA88 |
| Dylan Gramlich | Laborers International Union of North America | Supporting | GA88 |
| Brad Epperly | Monsanto Company | Opposing | GA88 |
| Dustin Miller | Monsanto Company | Opposing | GA88 |
| Katie Graham | Monsanto Company | Opposing | GA88 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Opposing | GA88 |
| Charlotte Eby | North Central States Regional Council of Carpenters | Supporting | GA88 |
| Felicia Hilton | North Central States Regional Council of Carpenters | Supporting | GA88 |
| Taylor McDonald | North Central States Regional Council of Carpenters | Supporting | GA88 |
| Donna Orton | North Iowa Area Community College | Undecided | GA88 |
| Kelli Harrison | UAW Region 4 | Supporting | GA88 |