Municipal government of Toronto
On January 1, 1967, several of the smaller municipalities were amalgamated with larger ones, reducing their number to six. Forest Hill and Swansea became part of Toronto; Long Branch, Mimico, and New Toronto joined Etobicoke; Weston merged with York; and Leaside amalgamated with East York. This arrangement lasted until 1998, when the regional level of government was abolished and Etobicoke, North York, East York, York, and Scarborough were amalgamated into Toronto the "megacity". Mel Lastman, the long-time mayor of North York before the amalgamation, was the first mayor (62nd overall) of the new "megacity" of Toronto, which is the successor of the previous City of Toronto.
York South
York South was created in 1903 as "the south riding of York" from parts of York East and York West ridings. It initially consisted of the township of York, and the towns of East Toronto, North Toronto, and Toronto Junction. As is suggested by the names of the towns in the riding, the constituency abutted on the city of Toronto's northern border.