Jack Kemler serves as Sheriff of Mercer County. He identifies as a Democrat.
2020
–Endorsed Stephanie Schmid (D) for Representative of New Jersey, 4th District (lost general election)
2024
–Endorsed Herb Conaway (D) for Representative of New Jersey, 3rd District (won)
2025
–Endorsed Mikie Sherrill (D) for Governor of New Jersey (won)
The Endorsement Project 