Ken is proudly endorsed by:
- NYSUT
- Police Conference of New York
- 32BJ
- New York City PBA
- New York State AFL-CIO
- PBA of New York State
- The Business Council
- Rockland County Building and Construction Trade Council
- Retired Sergeants Association
- CSEA
- AFSCME
- New York League of Conservation Voters
- National NYCPD 10-13 Organizations
- PEF
- CWA District 1
- Sierra Club
- Planned Parenthood Empire State Votes