| Dan Gannon | DAV-Iowa | Supporting | GA89 |
| David Thornburg | DAV-Iowa | Supporting | GA89 |
| Matthew Hickok | Families United Action Network (FUAN) | Supporting | GA89 |
| Nicholas Dreeszen | Families United Action Network (FUAN) | Supporting | GA89 |
| Rosanne Plante | Families United Action Network (FUAN) | Supporting | GA89 |
| Ryan Knapp | Families United Action Network (FUAN) | Supporting | GA89 |
| Ryan Marquardt | Families United Action Network (FUAN) | Supporting | GA89 |
| Ryan Rupe | Families United Action Network (FUAN) | Supporting | GA89 |
| Sarah Abdouch | Families United Action Network (FUAN) | Supporting | GA89 |
| Tom McDermott | Families United Action Network (FUAN) | Supporting | GA89 |
| ToyA Johnson | Families United Action Network (FUAN) | Supporting | GA89 |
| Whitney Rupe | Families United Action Network (FUAN) | Supporting | GA89 |
| Bill Gustoff | Homeschool Iowa | Undecided | GA89 |
| Joe Bailey | Homeschool Iowa | Undecided | GA89 |
| Mike Heller | Iowa Academy of Trial Lawyers | Undecided | GA89 |
| Paula Feltner | Iowa Academy of Trial Lawyers | Undecided | GA89 |
| Laura Hessburg | Iowa Coalition Against Domestic Violence | Opposing | GA89 |
| Carrie Malone | Iowa Dept. of Human Services | Undecided | GA89 |
| Doug Struyk | Iowa State Bar Association | Opposing | GA89 |
| Jennifer Dorman | Iowa State Bar Association | Opposing | GA89 |
| Jim Carney | Iowa State Bar Association | Opposing | GA89 |
| Jesse Cickavage | IowaFathers | Supporting | GA89 |
| Martin Connell | IowaFathers | Supporting | GA89 |
| Charlotte Eby | Iowans for Common Sense Solutions | Opposing | GA89 |
| Ryan Knapp | Paternal Guardians of Iowa | Supporting | GA89 |
| David Vesper | Personal Interest-David Vesper | Supporting | GA89 |
| Jesse Cickavage | Personal Interest-Jesse Cickavage | Supporting | GA89 |
| Joel Campbell | Personal Interest-Joel Campbell | Supporting | GA89 |
| Kathy Tillotson | Personal Interest-Kathy Tillotson | Supporting | GA89 |
| Martin Connell | Personal Interest-Martin Connell | Supporting | GA89 |
| Matthew Hickok | Personal Interest-Matthew Hickok | Supporting | GA89 |
| Ruth Nichols | Personal Interest-Ruth Nichols | Supporting | GA89 |
| Ryan Rupe | Personal Interest-Ryan Rupe | Supporting | GA89 |
| Zachariah Van Der Hart | Personal Interest-Zachariah Van Der Hart | Supporting | GA89 |
| Karl Schilling | Soaring Hearts | Opposing | GA89 |
| David Vesper | The Fathers' Rights Movement | Supporting | GA89 |