Ontario was a provincial riding in the

Canadian Canadians (french: Canadiens) are people identified with the country of Canada. This connection may be residential, legal, historical or cultural. For most Canadians, many (or all) of these connections exist and are collectively the source of ...

province of

Ontario Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central Ca ...

. Called Ontario South until 1933, it was active from 1867 to 1975. For its entire existence, the riding contained parts of or all of Ontario County, a now-defunct

county A county is a geographic region of a country used for administrative or other purposesChambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...

which comprised most, but not all, of the contemporary

Regional Municipality of Durham The Regional Municipality of Durham (), informally referred to as Durham Region, is a regional municipality in Southern Ontario, Canada. Located east of Toronto and the Regional Municipality of York, Durham forms the east-end of the Greater To ...

, including the municipalities of

Ajax Ajax may refer to: Greek mythology and tragedy * Ajax the Great, a Greek mythological hero, son of King Telamon and Periboea * Ajax the Lesser, a Greek mythological hero, son of Oileus, the king of Locris * ''Ajax'' (play), by the ancient Greek ...

Oshawa Oshawa ( , also ; 2021 population 175,383; CMA 415,311) is a city in Ontario, Canada, on the Lake Ontario shoreline. It lies in Southern Ontario, approximately east of Downtown Toronto. It is commonly viewed as the eastern anchor of the G ...

, Pickering and

Whitby Whitby is a seaside town, port and civil parish in the Scarborough borough of North Yorkshire, England. Situated on the east coast of Yorkshire at the mouth of the River Esk, Whitby has a maritime, mineral and tourist heritage. Its East Clif ...

. After 1955, however, a separate riding called

was created to serve the city of Oshawa, Ajax and parts of Pickering and Whitby, while the Ontario riding continued to serve the more rural areas in the county. In 1966 a new

Ontario South Ontario South was a federal electoral district represented in the House of Commons of Canada from 1867 to 1925. It was located in the province of Ontario. It was created by the British North America Act of 1867. The South riding consisted initi ...

was created to represent Ajax, Pickering and Whitby. The remainder of the riding was divided into the new ridings of

Durham West Durham West was a federal electoral district represented in the House of Commons of Canada from 1867 to 1904. It was located in the province of Ontario. It was created by the British North America Act of 1867 which divided the county of Durham ...

, Durham East and Durham—York in 1975.

Members of the Legislative Assembly

Election results (1934-1963)

References

*Centennial Edition of a History of the Electoral Districts, Legislatures and Ministries of the Province of Ontario 1867-1967 {{coord missing, Ontario Former provincial electoral districts of Ontario Ajax, Ontario Pickering, Ontario Politics of Oshawa Whitby, Ontario