Halton was a federal electoral district in Ontario, Canada, represented in the House of Commons of Canada from 1867 to 1988 before being abolished in an electoral district redistribution, and again from 1997 to 2015, when it was again abolished in another electoral district redistribution. When it was last contested in 2011, its population was 203,437, of whom 115,255 were eligible electors.
Bothwell was a federal and provincial electoral district in the Canadian province of Ontario, which was represented in the House of Commons of Canada from 1867 to 1904 and in the Legislative Assembly of Ontario from 1867 to 1875. It is sometimes also considered one of Ontario's historic counties, as it was listed in some post-Confederation census records as a county of residence.
Addington was a federal electoral district in Ontario, Canada, that was represented in the House of Commons of Canada from 1867 to 1904. The electoral district was created in the British North America Act of 1867.
Restigouche was a federal electoral district in New Brunswick, Canada, that was represented in the House of Commons of Canada from 1867 to 1917 and from 1968 to 1997.
Brant South was a federal and provincial electoral district in Ontario, Canada, that was represented in the House of Commons of Canada from 1867 to 1904, and in the Legislative Assembly of Ontario from 1867 to 1923.
Bruce North was a federal electoral district in Ontario, Canada, that was represented in the House of Commons of Canada from 1867 to 1935. It was created by the British North America Act of 1867 which divided the county of Bruce into two ridings: Bruce North and Bruce South.
Bruce South was a federal electoral district in Ontario, Canada, that was represented in the House of Commons of Canada from 1867 to 1882 and from 1903 to 1935.
Cornwall was a federal electoral district represented in the House of Commons of Canada from 1867 to 1882. It was located in the province of Ontario. It was created by the British North America Act of 1867. It consisted of the Town of Cornwall and the Township of Cornwall.
Elgin East 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 which divided the county of Elgin into two ridings: Elgin East and Elgin West based on a traditional division.
Frontenac 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.
Haldimand was a federal electoral district in the province of Ontario, Canada, that was represented in the House of Commons of Canada from 1867 to 1892 and from 1904 to 1953. It was created by the British North America Act of 1867.
Hastings East 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 which divided the County of Hastings into three ridings: Hastings East, Hastings West, and Hastings North.
Kent was a federal electoral district (riding) represented in the House of Commons of Canada from 1867 to 1904, 1917 to 1968, and 1979 to 1997. It was located in the province of Ontario and was created by the British North America Act of 1867.
Middlesex East was a former federal electoral district in Ontario, Canada, represented in the House of Commons of Canada from 1867 to 1968. It was created by the British North America Act of 1867, which divided the County of Middlesex into three ridings: Middlesex North, Middlesex West and Middlesex East.
Prescott was a federal electoral district represented in the House of Commons of Canada from 1867 to 1953. It was located in the province of Ontario. It was created by the British North America Act of 1867, and consisted of the County of Prescott.
Stormont was a federal electoral district represented in the House of Commons of Canada from 1867 to 1882, 1904 to 1917, and 1925 to 1968. It was located in the eastern part of the province of Ontario.
Bruce East was a federal electoral district in Ontario, Canada, that was represented in the House of Commons of Canada from 1882 to 1904. This riding was created in 1882 from parts of Bruce North and Bruce South ridings.
Huron West was a federal electoral district represented in the House of Commons of Canada from 1882 to 1917. It was located in the province of Ontario. This riding was created from parts of Huron Centre, Huron North and Huron South ridings.
Glengarry and Stormont was a federal electoral district represented in the House of Commons of Canada from 1917 to 1925. It was located in the province of Ontario. This riding was created in 1914 from parts of Glengarry and Stormont ridings.
Ontario electoral district 