Janel Brandtjen is endorsed by:
- Eric Severson, Sheriff (Waukesha County)
- Don Pridemore, Former State Representative
- Tim Dodlinger, County Supervisor (Waukesha)
- Katie Kress, Village Trustee (Menomonee Falls)
- Paul Tadda, Village Trustee (Menomonee Falls)
- Tim Michalak, Mayor (Hartford)
- Maureen Fitzsimmons-Vanden Heuvel, Executive Committee (Town of Erin)
- Jennifer Grant, Waukesha County Supervisor (Menomonee Falls)
- Tom Gudex, Village President (Lannon)
- Randy Melchert, former State Assembly Candidate (R-Menomonee Falls)
- Pro Life Wisconsin
- Menomonee Falls Taxpayer Association
- Waukesha County Taxpayer Association
- Milwaukee Police Association
- Wisconsin Family Action
- Wisconsin Realtors Association
- Wisconsin Right to Life
In addition, Brandtjen received the highest possible grade for a new candidate from the NRA: A