Chapter XX: Section 11: Except as otherwise provided in this Constitution,

justices of the peace or aldermen shall be elected in the several
wards, districts, boroughs and townships at the time of the election
of constables by the qualified electors thereof, in such manner as
shall be directed by law, and shall be commissioned by the Governor
for a term of five years. No township, ward, district or borough
shall elect more than two justices of the peace or aldermen without
the consent of a majority of the qualified electors within such
township, ward or borough; no person shall be elected to such office
unless he shall have resided within the township, borough, ward
or district for one year next preceding his election. In cities
containing over fifty thousand inhabitants, not more than one
alderman shall be elected in each ward or district.

Magistrates in Philadelphia.