| Brad Epperly | BNSF Railway Co. | Undecided | GA88 |
| Dustin Miller | BNSF Railway Co. | Undecided | GA88 |
| Katie Graham | BNSF Railway Co. | Undecided | GA88 |
| Paula Dierenfeld | BNSF Railway Co. | Undecided | GA88 |
| Wendy Abrahamson | Episcopal Diocese of Iowa | Supporting | GA88 |
| Brad Epperly | Helena Agri-Enterprises, LLC | Undecided | GA88 |
| Dustin Miller | Helena Agri-Enterprises, LLC | Undecided | GA88 |
| Katie Graham | Helena Agri-Enterprises, LLC | Undecided | GA88 |
| Paula Dierenfeld | Helena Agri-Enterprises, LLC | Undecided | GA88 |
| Dane Schumann | IBEW Iowa State Conference | Undecided | GA88 |
| Maddie Wilcox | IBEW Iowa State Conference | Undecided | GA88 |
| Threase Harms | IBEW Iowa State Conference | Undecided | 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 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Dustin Miller | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Undecided | GA88 |
| Brad Epperly | Iowa Automobile Dealers Association | Undecided | GA88 |
| Dustin Miller | Iowa Automobile Dealers Association | Undecided | GA88 |
| Katie Graham | Iowa Automobile Dealers Association | Undecided | GA88 |
| Paula Dierenfeld | Iowa Automobile Dealers Association | Undecided | GA88 |
| Amy Campbell | Iowa Behavioral Health Association (IBHA) | Undecided | GA88 |
| Craig Patterson | Iowa Behavioral Health Association (IBHA) | Undecided | GA88 |
| Brad Epperly | Iowa Broadcasters Association | Undecided | GA88 |
| Dustin Miller | Iowa Broadcasters Association | Undecided | GA88 |
| Katie Graham | Iowa Broadcasters Association | Undecided | GA88 |
| Paula Dierenfeld | Iowa Broadcasters Association | Undecided | GA88 |
| Laura Hessburg | Iowa Coalition Against Domestic Violence | Supporting | GA88 |
| Brad Epperly | Iowa Collectors Association, Inc. | Undecided | GA88 |
| Dustin Miller | Iowa Collectors Association, Inc. | Undecided | GA88 |
| Katie Graham | Iowa Collectors Association, Inc. | Undecided | GA88 |
| Paula Dierenfeld | Iowa Collectors Association, Inc. | Undecided | GA88 |
| Brian Carter | Iowa Conference of United Methodist Church | Supporting | GA88 |
| Gary Nims | Iowa Conference of United Methodist Church | Supporting | GA88 |
| Rita Carter | Iowa Conference of United Methodist Church | Supporting | GA88 |
| Sheila Corsbie | Iowa Conference of United Methodist Church | Supporting | GA88 |
| William Steward | Iowa Conference of United Methodist Church | Supporting | 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 | Undecided | GA88 |
| Dustin Miller | Iowa Grocery Industry Association | Undecided | GA88 |
| Katie Graham | Iowa Grocery Industry Association | Undecided | GA88 |
| Paula Dierenfeld | Iowa Grocery Industry Association | Undecided | GA88 |
| Alan Kemp | Iowa League of Cities | Undecided | GA88 |
| Daniel Stalder | Iowa League of Cities | Undecided | GA88 |
| Robert Palmer | Iowa League of Cities | Undecided | 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 |
| Kellie Paschke | Iowa Peace Officers Association | Undecided | GA88 |
| Troy Skinner | Iowa Peace Officers Association | Undecided | GA88 |
| Brad Epperly | Iowa Society of Certified Public Accountants | Undecided | GA88 |
| Dustin Miller | Iowa Society of Certified Public Accountants | Undecided | GA88 |
| Katie Graham | Iowa Society of Certified Public Accountants | Undecided | GA88 |
| Paula Dierenfeld | Iowa Society of Certified Public Accountants | Undecided | GA88 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA88 |
| Jennifer Dorman | Iowa State Bar Association | Undecided | GA88 |
| Jim Carney | Iowa State Bar Association | Undecided | GA88 |
| Amy Campbell | League of Women Voters of Iowa | Supporting | GA88 |
| Craig Patterson | League of Women Voters of Iowa | Supporting | GA88 |
| Brad Epperly | Monsanto Company | Undecided | GA88 |
| Dustin Miller | Monsanto Company | Undecided | GA88 |
| Katie Graham | Monsanto Company | Undecided | GA88 |
| Cody Carlson | National Federation of Independent Business (NFIB /IA) | Opposing | GA88 |
| Kelli Harrison | UAW Region 4 | Supporting | GA88 |
| Jon Murphy | United Ways of Iowa | Undecided | GA88 |
| Tom Cope | United Ways of Iowa | Undecided | GA88 |