The list of Ontario by-elections includes every by-election held in the Canadian province of Ontario. By-elections occur whenever there is a vacancy in the Legislative Assembly, although an imminent general election may allow the vacancy to remain until the dissolution of parliament.
Causes
A by-election occurs whenever there is a vacancy in the Ontario legislature. Vacancies can occur for the following reasons:
- Death of a member.
- Resignation of a member.
- Voided results
- Expulsion from the legislature.
- Ineligibility to sit.
When there is a vacancy, a by-election must be called within six months. Under amendments to the Election Act approved in 2016, a by-election is no longer required when a vacancy occurs in the 12 months leading up to a fixed general election date.
Ministerial by-elections
The list includes ministerial by-elections which occurred due to the requirement that incumbent members recontest their seats upon being appointed to Cabinet. These by-elections were almost always uncontested. This requirement was amended in 1926 to exempt ministers appointed within three months after a general election. In 1941 it was abolished completely.
43rd Legislative Assembly of Ontario 2022–2025
42nd Legislative Assembly of Ontario 2018–2022
41st Legislative Assembly of Ontario 2014–2018
40th Legislative Assembly of Ontario 2011–2014
39th Legislative Assembly of Ontario 2007–2011
38th Legislative Assembly of Ontario 2003–2007
37th Legislative Assembly of Ontario 1999–2003
36th Legislative Assembly of Ontario 1995–1999
35th Legislative Assembly of Ontario 1990–1995
34th Legislative Assembly of Ontario 1987–1990
33rd Legislative Assembly of Ontario 1985–1987
32nd Legislative Assembly of Ontario 1981–1985
31st Legislative Assembly of Ontario 1977–1981
30th Legislative Assembly of Ontario 1975–1977
no by-elections
29th Legislative Assembly of Ontario 1971–1975
28th Legislative Assembly of Ontario 1967–1971
27th Legislative Assembly of Ontario 1963–1967
26th Legislative Assembly of Ontario 1959–1963
25th Legislative Assembly of Ontario 1955–1959
† Won by acclamation
24th Legislative Assembly of Ontario 1951–1955
23rd Legislative Assembly of Ontario 1948–1951
22nd Legislative Assembly of Ontario 1945–1948
21st Legislative Assembly of Ontario 1943–1945
20th Legislative Assembly of Ontario 1937–1943
† Won by acclamation
*Though nominally an "Independent-Liberal", MacBride was a supporter of the Liberal government and was a cabinet minister at the time of his death
19th Legislative Assembly of Ontario 1934–1937
† Won by acclamation
18th Legislative Assembly of Ontario 1929–1934
† Won by acclamation
17th Legislative Assembly of Ontario 1926–1929
† Won by acclamation
16th Legislative Assembly of Ontario 1923–1926
† Won by acclamation
15th Legislative Assembly of Ontario 1919–1923
† Won by acclamation
14th Legislative Assembly of Ontario 1914–1919
† Won by acclamation
13th Legislative Assembly of Ontario 1911–1914
† Won by acclamation
12th Legislative Assembly of Ontario 1908–1911
† Won by acclamation
11th Legislative Assembly of Ontario 1905–1908
† Won by acclamation
10th Legislative Assembly of Ontario 1902–1904
9th Legislative Assembly of Ontario 1898–1902
† Won by acclamation
8th Legislative Assembly of Ontario 1894–1898
† Won by acclamation
7th Legislative Assembly of Ontario 1890–1894
† Won by acclamation
6th Legislative Assembly of Ontario 1886–1890
† Won by acclamation
5th Legislative Assembly of Ontario 1883–1886
† Won by acclamation
4th Legislative Assembly of Ontario 1879–1883
† Won by acclamation
*McAllister was a supporter of Mowat's government
3rd Legislative Assembly of Ontario 1875–1879
† Won by acclamation
2nd Legislative Assembly of Ontario 1871–1874
† Won by acclamation
1st Legislative Assembly of Ontario 1867–1871
See also
- List of federal by-elections in Canada
References
Notes
Citations
Further reading
- Forman, Debra Legislators and Legislatures of Ontario: A Reference Guide. Legislative Library of Ontario Research and Information Services, 1984
- Lewis, Roderick, Centennial Edition of a History of the Electoral Districts, Legislatures and Ministries of the Province of Ontario 1867–1968. F. Fogg, Queen's Printer, 1969.
- Electoral history of Ontario: Candidates and Results. Office of the Chief Election Officer of Ontario, 1983
