Pennsylvania Statutes Title 53 P.S. Municipal and Quasi-Municipal Corporations § 53253. Offices incompatible with civil service commissioner;  political activities prohibited

No commissioner shall at the same time hold an elective or appointed office under the United States government, the Commonwealth of Pennsylvania or any political subdivision of the Commonwealth, except that one member of the commission may be a member of the council of the borough or incorporated town or board of township commissioners, as the case may be.