| Daniel Zeno | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | GA87 |
| Pete McRoberts | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | GA87 |
| Rita Bettis Austen | American Civil Liberties Union of Iowa (ACLU-IA) | Opposing | GA87 |
| Kimberly Haus | Drug Policy Alliance | Supporting | GA87 |
| Jeff Smith | Families Against Mandatory Minimum (FAMM) | Supporting | GA87 |
| Jerry Fitzgerald | Families Against Mandatory Minimum (FAMM) | Supporting | GA87 |
| Jonathan DeReus | Families Against Mandatory Minimum (FAMM) | Supporting | GA87 |
| Maggie Smith-Fitzgerald | Families Against Mandatory Minimum (FAMM) | Supporting | GA87 |
| Matt Fitzgerald | Families Against Mandatory Minimum (FAMM) | Supporting | GA87 |
| Marty Ryan | Fawkes-Lee & Ryan Inc. | Opposing | GA87 |
| Stephanie Fawkes-Lee | Fawkes-Lee & Ryan Inc. | Opposing | GA87 |
| Dale Woolery | Governors Office of Drug Control Policy | Undecided | GA87 |
| Angela Davis | Iowa Association for Justice | Supporting | GA87 |
| Bill Wimmer | Iowa Association for Justice | Supporting | GA87 |
| Brad Lint | Iowa Association for Justice | Supporting | GA87 |
| Lisa Davis-Cook | Iowa Association for Justice | Supporting | GA87 |
| Kevin McCarthy | Iowa Attorney General Dept. of Justice | Supporting | GA87 |
| Kevin McCarthy | Iowa Attorney General Dept. of Justice | Withdrawn | GA87 |
| Kevin McCarthy | Iowa Attorney General Dept. of Justice | Undecided | GA87 |
| Kelly Meyers | Iowa County Attorneys Association | Supporting | GA87 |
| Kelly Meyers | Iowa County Attorneys Association | Undecided | GA87 |
| Susan Cameron Daemen | Iowa County Attorneys Association | Supporting | GA87 |
| Susan Cameron Daemen | Iowa County Attorneys Association | Undecided | GA87 |
| Michael Savala | Iowa Dept. of Corrections | Supporting | GA87 |
| Kellie Paschke | Iowa Peace Officers Association | Undecided | GA87 |
| Troy Skinner | Iowa Peace Officers Association | Undecided | GA87 |
| Gary Grant | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Undecided | GA87 |
| Larry Murphy | Iowa Police Chief Association (FKA Iowa Police Executive Forum) | Undecided | GA87 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA87 |
| Jim Carney | Iowa State Bar Association | Undecided | GA87 |
| Shannon Henson | Iowa State Bar Association | Undecided | GA87 |
| Mike Heller | Iowa State Police Association | Opposing | GA87 |
| Paula Feltner | Iowa State Police Association | Opposing | GA87 |
| Marty Ryan | Justice Reform Consortium | Opposing | GA87 |
| Stephanie Fawkes-Lee | Justice Reform Consortium | Opposing | GA87 |
| Amy Campbell | League of Women Voters of Iowa | Supporting | GA87 |
| Craig Patterson | League of Women Voters of Iowa | Supporting | GA87 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA87 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA87 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA87 |
| Betty Andrews | NAACP, National Association for the Advancement of Colored People, Iowa-Nebraska | Undecided | GA87 |
| Charlotte Eby | U.S. Justice Action Network | Supporting | GA87 |
| Jeffrey Boeyink | U.S. Justice Action Network | Supporting | GA87 |
| Mark Joyce | U.S. Justice Action Network | Supporting | GA87 |
| Susan Fenton | U.S. Justice Action Network | Supporting | GA87 |