Etobicoke North is a federal electoral district in Toronto, Ontario, Canada, that has been represented by one Member of Parliament in the House of Commons of Canada since 1979. It covers the neighbourhood of Rexdale, in the northern part of the Etobicoke district of Toronto.
Oshawa is a federal electoral district in Ontario, Canada, that is represented in the House of Commons of Canada. It currently consists of the City of Oshawa south of Taunton Road. Historically, the riding was dominated by a working-class electorate.
Durham is a federal electoral district in Ontario, Canada, that has been represented in the House of Commons of Canada from 1904 to 1968 and since 1988.
Whitby—Oshawa was a federal electoral district in Ontario, Canada, that has been represented in the House of Commons of Canada since 2004. Following the 2012 federal electoral boundaries redistribution, the bulk of the district became part of the new Whitby district, while parts of it will be transferred to Oshawa and Durham.
Whitby—Ajax was a federal and provincial electoral district in Ontario, Canada. It was represented in the House of Commons of Canada from 1997 to 2003, and in the Legislative Assembly of Ontario from 1999 to 2007. It was located to the east of Toronto, consisting of the Town of Whitby and the part of the Town of Ajax lying to the south of Kingston Road.
Sault Ste. Marie is a provincial electoral district in the Legislative Assembly of Ontario, representing the City of Sault Ste. Marie.
Niagara West—Glanbrook was a provincial electoral district in south eastern Ontario, Canada between 2007 and 2018. It elected one member to the Legislative Assembly of Ontario.
Windsor West is a provincial electoral district in Ontario, Canada, represented in the Legislative Assembly of Ontario from 1967 to 1975 since 1999.
Scarborough—Rouge River was a provincial electoral district in Ontario, Canada, that was represented in the Legislative Assembly of Ontario between 1999 and 2018.
Oshawa is a provincial electoral district in Ontario, Canada, that has been represented in the Legislative Assembly of Ontario since 1955.
Whitby—Oshawa was a provincial electoral district in Ontario, Canada, that was represented in the Legislative Assembly of Ontario from the 2007 provincial election until 2018. The riding was adjusted by the 2015 Representation Act for the 2018 provincial election, losing some territory to the district of Oshawa, and replaced as the district of Whitby.
Brampton East is a federal electoral district in Ontario. It encompasses a portion of Ontario previously included in the electoral districts of Bramalea—Gore—Malton and Brampton—Springdale.
Milton is a federal electoral district in Ontario, Canada, that consists of the town of Milton and part of Burlington which has a population growing much faster than the Ontario average. It was created by the 2012 federal redistribution and previously part of Halton. Redistributed results showed that Conservative Lisa Raitt won the area easily in 2011, although her vote share dropped in the 2015 election and the Liberals took the riding in 2019. Since 2019 it has been represented by Liberal Adam van Koeverden.
Whitby is a federal electoral district (riding) in Ontario consisting of the entire town of Whitby, Ontario. The boundaries for Whitby were created by the 2012 federal electoral boundaries redistribution and were legally defined in the 2013 representation order. The riding came into existence upon the call of the 42nd Canadian federal election in October 2015. It was created out of the district of Whitby—Oshawa. It is a key Liberal-Conservative marginal seat.
Jennifer Kay French is a politician in Ontario, Canada. She is a New Democratic member of the Legislative Assembly of Ontario who was elected in 2014. She represents the riding of Oshawa.
Markham—Stouffville is a provincial electoral district in Ontario. It encompasses a portion of Ontario formerly included in the electoral districts of Markham—Unionville and Oak Ridges—Markham.
Mississauga Centre is a provincial electoral district in Ontario, Canada, that was represented in the Legislative Assembly of Ontario from 1999 to 2007, and again from 2018 to present.
Lorne Earle Coe is a politician in Ontario, Canada. He is a Progressive Conservative member of the Legislative Assembly of Ontario who represents the riding of Whitby and was first elected in a by-election held on 11 February 2016. Coe was elected with 52% of the vote compared to 28% for his closest rival, Elizabeth Roy of the Ontario Liberal Party. Coe served on Whitby Town Council for 13 years, first as a town councillor and as a regional councillor from 2010 until his election to the provincial legislature in 2016.
A by-election was held in the federal riding of Markham—Thornhill in Ontario, Canada on 3 April 2017 following the resignation of Liberal MP and Minister of Immigration John McCallum, who was appointed to a diplomatic post. The seat was held by the Liberal candidate Mary Ng on a reduced majority.
Ontario electoral district 
