List of Ontario Legislative Assemblies

This is a list of the Parliaments of the Ontario Legislative Assembly, the legislature of the Canadian province of Ontario, since Canadian Confederation in 1867. The Legislative Assembly has existed since 1867 when the British North America Act, 1867 severed the Province of Canada into two new provinces, with the portion then called Canada West becoming Ontario. For the Parliaments prior to Confederation, see Parliament of the Province of Canada (1841 to 1867) and Parliament of Upper Canada (1791 to 1841).

The Ontario Legislative Building in 2010

List of Parliaments
Diagram Assembly
Sessions		 Election From
To [1]		 Governing Party Premier Official Opposition Party
Leader		 Other Official Party
Leader		 Speaker
1st Parliament 1st general Sep. 3, 1867
Feb. 25, 1871		 Liberal-Conservative
and Liberal coalition		 John Sandfield Macdonald none none John Stevenson
2nd Parliament 2nd general Mar. 21, 1871
...		 Liberal Edward Blake Liberal-Conservative:
Matthew Crooks Cameron		 none Richard Scott (1871)
James Currie (1871–1873)
Rupert Wells (1874)
Oct. 25, 1872
Dec. 23, 1874		 Sir Oliver Mowat
3rd Parliament 3rd general Jan. 18, 1875
April 25, 1879		 Liberal Sir Oliver Mowat Conservative:
Matthew Crooks Cameron (1875–1878)
Sir William Ralph Meredith (1878–1879)		 none Rupert Wells
4th Parliament 4th general June 5, 1879
Feb. 1, 1883		 Liberal Sir Oliver Mowat Conservative:
Sir William Ralph Meredith		 none Charles Clarke
5th Parliament 5th general Feb. 27, 1883
Nov. 15, 1886		 Liberal Sir Oliver Mowat Conservative:
Sir William Ralph Meredith		 none Charles Clarke
6th Parliament 6th general Dec. 29, 1886
April 26, 1890		 Liberal Sir Oliver Mowat Conservative:
Sir William Ralph Meredith		 none Jacob Baxter
7th Parliament 7th general June 5, 1890
May 29, 1894		 Liberal Sir Oliver Mowat Conservative:
Sir William Ralph Meredith		 none Thomas Ballantyne
8th Parliament 8th general June 26, 1894
...		 Liberal Sir Oliver Mowat Conservative:
Sir William Ralph Meredith (1894)
George Marter (1894–1896)
Sir James Whitney		 none William Balfour (1895–1896)
Francis Evanturel (1897–1898)
Jul. 21, 1896
Jan. 28, 1898		 Arthur Hardy
9th Parliament 9th general Mar. 1, 1898
...		 Liberal Arthur Hardy Conservative:
Sir James Whitney		 none Francis Evanturel
Oct. 20, 1899
April 19, 1902		 Sir George William Ross
10th Parliament 10th general May 29, 1902
Dec. 13, 1904		 Liberal Sir George William Ross Conservative:
Sir James Whitney		 none William Charlton
11th Parliament 11th general Jan. 25, 1905
May 2, 1908		 Conservative Sir James Whitney Liberal:
Sir George William Ross (1905–1907)
George P. Graham (1907)
Alexander Grant MacKay (1907–1908)		 none Joseph St. John (1905–1907)
Thomas Crawford (1907–1908)
12th Parliament 12th general June 8, 1908
Nov. 13, 1911		 Conservative Sir James Whitney Liberal:
Alexander Grant MacKay		 none Thomas Crawford
13th Parliament 13th general Dec. 11, 1911
May 29, 1914		 Conservative Sir James Whitney Liberal:
Newton Wesley Rowell		 none William Hoyle
14th Parliament 14th general June 29, 1914
...		 Conservative Sir James Whitney Liberal:
Newton Wesley Rowell (1914–1917)
William Proudfoot (1917–1919)		 none David Jamieson
Oct. 2, 1914
Sep. 23, 1919		 Sir William Hearst
15th Parliament 15th general Oct. 20, 1919
May 10, 1923		 United Farmers Ernest Drury Liberal:
Hartley Dewart (1919–1921)
Wellington Hay (1921–1923)		 Conservative Nelson Parliament
16th Parliament 16th general June 25, 1923
Oct. 18, 1926		 Conservative Howard Ferguson Liberal:
William Sinclair		 United Farmers Joseph Thompson
17th Parliament 17th general Dec. 1, 1926
Sep. 17, 1929		 Conservative Howard Ferguson Liberal:
William Sinclair		 none William Black
18th Parliament 18th general Oct. 30, 1929
...		 Conservative Howard Ferguson Liberal:
William Sinclair		 none Thomas Kidd
Dec. 16, 1930
May 16, 1934		 George Stewart Henry
19th Parliament 19th general June 19, 1934
Aug. 25, 1937		 Liberal Mitchell Hepburn Conservative:
George Henry		 none Norman Hipel
20th Parliament 20th general Oct. 6, 1937
...		 Liberal Mitchell Hepburn Conservative:
George Henry (1937–1939)
George Drew (1939–1943)		 none Norman Hipel (1937–1938)
James Clark (1939–1943)
Oct. 21, 1942
...		 Gordon Daniel Conant
May 18, 1943
Harry Nixon
21st Parliament 21st general Aug. 4, 1943
Mar. 24, 1945		 Progressive Conservative minority
(38 of 90 seats)		 George Drew Co-operative Commonwealth Federation:
Ted Jolliffe		 Liberal William James Stewart
22nd Parliament 22nd general June 4, 1945
April 27, 1948		 Progressive Conservative
(66 of 90 seats)		 George Drew Liberal:
Farquhar Oliver		 none William James Stewart (1945–1947)
James Hepburn (1947–1948)
23rd Parliament 23rd general June 7, 1948
...		 Progressive Conservative
(53 of 90 seats)		 George Drew Co-operative Commonwealth Federation:
Ted Jolliffe		 Liberal M.C. Davies
Oct. 19, 1948
...		 Thomas Laird Kennedy
May 4, 1949
Oct. 6, 1951		 Leslie Frost
24th Parliament 24th general Nov. 22, 1951
May 2, 1955		 Progressive Conservative
(79 of 90 seats)		 Leslie Frost Liberal:
Farquhar Oliver
 none M.C. Davies
25th Parliament 25th general June 9, 1955
May 4, 1959		 Progressive Conservative
(87 of 98 seats)		 Leslie Frost Liberal:
Farquhar Oliver (1955–1958)
John Wintermeyer (1958–1959)		 none Alfred Downer
26th Parliament 26th general June 11, 1959
...		 Progressive Conservative
(71 of 98 seats)		 Leslie Frost Liberal:
John Wintermeyer		 none William Murdoch
Nov. 8, 1961
Aug. 16, 1963		 John Robarts
27th Parliament 27th general Sep. 25, 1963
Sep. 5, 1967		 Progressive Conservative
(77 of 108 seats)		 John Robarts Liberal:
Farquhar Oliver (1963–1964)
Andy Thompson (1964–1966)
Robert Nixon (1967)		 none Donald Morrow
28th Parliament 28th general Oct. 17, 1967
...		 Progressive Conservative
(69 of 117 seats)		 John Robarts Liberal:
Robert Nixon		 New Democratic Frederick Cass
Mar. 1, 1971
Sep. 13, 1971		 Bill Davis
29th Parliament 29th general Oct. 21, 1971
Aug. 11, 1975		 Progressive Conservative
(78 of 117 seats)		 Bill Davis Liberal:
Robert Nixon		 New Democratic:
Stephen Lewis		 Allan Reuter (1971–1974)
Russell Rowe (1974–1975)
30th Parliament 30th general Sep. 18, 1975
April 29, 1977		 Progressive Conservative minority
(51 of 125 seats)		 Bill Davis New Democratic:
Stephen Lewis		 Liberal:
Robert Nixon (1975–1976)
Stuart Smith (1976–1977)		 Russell Rowe
31st Parliament 31st general June 9, 1977
Feb. 2, 1981		 Progressive Conservative minority
(58 of 125 seats)		 Bill Davis Liberal:
Stuart Smith		 New Democratic:
Stephen Lewis (1978)
Michael Cassidy (1978–1981)		 Jack Stokes
32nd Parliament
4 sessions		 32nd general Mar. 19, 1981
...		 Progressive Conservative
(70 of 125 seats)		 Bill Davis Liberal:
Robert Nixon (1982)
David Peterson (1982–1985)		 New Democratic:
Michael Cassidy (1982)
Bob Rae (1982–1985)		 John M. Turner
Feb. 8,1985
Mar. 25, 1985		 Frank Miller
33rd Parliament
3 sessions		 33rd general May 2, 1985
...		 Progressive Conservative minority
(52 of 125 seats)		 Frank Miller Liberal:
David Peterson (1985)		 New Democratic:
Bob Rae		 Hugh Edighoffer
June 26, 1985
July 31, 1987		 Liberal minority
(48 of 125 seats)[A]		 David Peterson Progressive Conservative:
Frank Miller (1985)
Larry Grossman (1985–1987)
34th Parliament
2 sessions		 34th general Sep. 10, 1987
July 30, 1990		 Liberal
(95 of 130 seats)		 David Peterson New Democratic:
Bob Rae		 Progressive Conservative:
Andy Brandt (1987–1990)
Mike Harris (1990)		 Hugh Edighoffer
35th Parliament
3 sessions		 35th general Sep. 6, 1990
April 28, 1995		 New Democratic
(74 of 130 seats)		 Bob Rae Liberal:
Robert Nixon (1990–1991)
Murray Elston (1991)
Jim Bradley (1991–1992)
Lyn McLeod (1992–1995)		 Progressive Conservative:
Mike Harris		 David Warner
36th Parliament
3 sessions		 36th general Sep. 26, 1995
May 5, 1999		 Progressive Conservative
(82 of 130 seats)		 Mike Harris Liberal:
Lyn McLeod (1995–1996)
Dalton McGuinty (1996–1999)		 New Democratic:
Bob Rae (1995–1996)
Howard Hampton (1996–1999)		 Al McLean (1995–1996)
Edward Doyle (1996)
Chris Stockwell (1996–1999)
37th Parliament
4 sessions		 37th general Oct. 20, 1999
...		 Progressive Conservative
(59 of 103 seats)		 Mike Harris Liberal:
Dalton McGuinty		 New Democratic:
Howard Hampton		 Gary Carr
April 15, 2002
June 26, 2003		 Ernie Eves
38th Parliament
2 sessions		 38th general Nov. 19, 2003
September 10, 2007		 Liberal
(72 of 103 seats)		 Dalton McGuinty Progressive Conservative:
Ernie Eves (2003–2004)
John Tory
(2004–2007)		 New Democratic:
Howard Hampton		 Alvin Curling (2003–2005)
Michael A. Brown (2005–2008)
39th Parliament
2 sessions		 39th general November 29, 2007
September 7, 2011		 Liberal
(71 of 107 seats)		 Dalton McGuinty Progressive Conservative:
Bob Runciman
(2007–2009)
Tim Hudak
(2009–2014)		 New Democratic:
Howard Hampton
(2007–2009)
Andrea Horwath
(2009–Present)		 Steve Peters
40th Parliament
2 sessions		 40th general November 22, 2011
February 11, 2013		 Liberal minority
(53 of 107 seats)		 Dalton McGuinty Progressive Conservative:
Tim Hudak		 New Democratic:
Andrea Horwath		 Dave Levac
February 11, 2013
May 2, 2014		 Kathleen Wynne
41st Parliament 41st general July 2, 2014
- May 8, 2018		 Liberal
(58 of 107 seats)		 Kathleen Wynne Progressive Conservative:
Jim Wilson (2014-2015)
Patrick Brown (2015-2018)
Vic Fedeli (2018)		 New Democratic:
Andrea Horwath		 Dave Levac
42nd Parliament 42nd general July 11, 2018
-		 Progressive Conservative
(76 of 124 seats)		 Doug Ford New Democratic:
Andrea Horwath		 none Ted Arnott
A Although they had fewer seats than the Conservatives, the Liberals formed a minority government with the support of the NDP.
  1. From the day that the writs were returned to the day that the legislature was dissolved.

Sources
  • Ontario. "Historical Records". Past & Present MPPs. Office of the Legislative Assembly of Ontario. Archived from the original on 2007-03-16. Retrieved 2007-03-11.
  • Ontario. "Speakers of the Legislative Assembly of Ontario". The Speaker. Office of the Legislative Assembly of Ontario. Archived from the original on 2007-07-04. Retrieved 2007-02-16.


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