Mark Singel served as Lieutenant Governor of Pennsylvania from 1987-1995. He previously served in the Pennsylvania State Senate. He identifies as a Democrat.
1986
–Endorsed Bob Casey (D) for Governor of Pennsylvania (won)
1990
–Endorsed Bob Casey (D) for Governor of Pennsylvania (won)
2010
–Endorsed Mark Critz (D) for Representative of Pennsylvania, 12th District (won)
2014
–Endorsed Tom Wolf (D) for Governor of Pennsylvania (won)
The Endorsement Project 