Constitution of the Commonwealth of Pennsylvania Schedule 1, § 25. Magistrates in Philadelphia

In Philadelphia magistrates in lieu of aldermen shall be chosen, as required in this Constitution, at the election in said city for city and ward officers in the year one thousand eight hundred and seventy-five;  their term of office shall commence on the first Monday of April succeeding their election.  The terms of office of aldermen in said city holding or entitled to commissions at the time of the adoption of this Constitution shall not be affected thereby.