§ 16. Legislative districts. The Commonwealth shall be divided into 50 senatorial and 203 representative districts, which shall be composed of compact and contiguous territory as nearly equal in population as practicable. Each senatorial district shall elect one Senator, and each representative district one Representative. Unless absolutely necessary no county, city, incorporated town, borough, township or ward shall be divided in forming either a senatorial or representative district. (Apr. 23, 1968, P.L.App.3, Prop. No.1) 1968 Amendment. Proposal No.1 amended and consolidated former sections 16 and 17 into present section 16. The schedule to Proposal No.1 provided that section 16, if approved by the electorate voting on April 23, 1968, shall become effective the year following that in which the next Federal decennial census is officially reported as required by Federal law.