25 Pa. Stat. § 3521
Any mayor, chief burgess, sheriff, deputy sheriff, constable, deputy constable, police officer or other peace officer who shall neglect or refuse to clear an avenue to the door of any polling place which is obstructed in such a way as to prevent electors from approaching, or who shall neglect or refuse to maintain order and quell any disturbance if such arises at any polling place upon the day of any primary or election, when called upon so to do by any election officer or any three qualified electors of the election district, or who shall wilfully hinder or delay, or attempt to hinder or delay, any judge, inspector or clerk of election, machine inspector or overseer in the performance of of any duty under this act, shall be guilty of a misdemeanor in office, and, upon conviction thereof, shall be sentenced to pay a fine not exceeding one thousand ($1,000) dollars, or to undergo an imprisonment of not more than one (1) year, or both, in the direction of the court.
25 P.S.§ 3521