Constitution of the Commonwealth of Pennsylvania Art. VII, § 14. Absentee voting

(a) The Legislature shall, by general law, provide a manner in which, and the time and place at which, qualified electors who may, on the occurrence of any election, be absent from the municipality of their residence, because their duties, occupation or business require them to be elsewhere or who, on the occurrence of any election, are unable to attend at their proper polling places because of illness or physical disability or who will not attend a polling place because of the observance of a religious holiday or who cannot vote because of election day duties, in the case of a county employee, may vote, and for the return and canvass of their votes in the election district in which they respectively reside.

(b) For purposes of this section, “municipality” means a city, borough, incorporated town, township or any similar general purpose unit of government which may be created by the General Assembly.