The Ontario Liberal Party is a provincial political party in the province of Ontario, Canada. It has formed the Government of Ontario since the provincial election of 2003. The party is ideologically aligned with the Liberal Party of Canada but the two parties are organizationally independent and have separate, though overlapping, memberships. The party is led by Dalton McGuinty, who is Premier of Ontario.

The Liberal Party of Ontario is descended from the Reform Party of Robert Baldwin and William Lyon Mackenzie, who argued for responsible government in the 1830s and 1840s against the conservative patrician rule of the Family Compact.

The modern Liberals were founded by George Brown, who sought to rebuild the Reform Party after its collapse in 1854. In 1857, Brown brought together the Reformers and the radical "Clear Grits" of southwestern Ontario to create a new party in Upper Canada with a platform of democratic reform and annexation of the north-west. The party adopted a position in favour of uniting Upper and Lower Canada into the United Province of Canada, a concept that eventually led to Canadian confederation.

Ontario /ɒnˈtɛərioʊ/ is one of the provinces of Canada, located in east-central Canada. It is Canada's most populous province or territory and fourth largest in total area. It is home to the nation's most populous city, Toronto, and the nation's capital, Ottawa.

Ontario is bordered by the province of Manitoba to the west, Hudson Bay to the north, Quebec to the east, and to the south by the U.S. states of Minnesota, Michigan (portions to the west), New York (portions to the east), Ohio and Pennsylvania. All but a small part of Ontario's 2,700 km (1,677 mi) border with the United States follow inland waterways: from the west at Lake of the Woods, eastward along the major rivers and lakes of the Great Lakes/St. Lawrence River drainage system. These are the Rainy River, the Pigeon River, Lake Superior, the St. Mary's River, Lake Huron, the St. Clair River, Lake St. Clair, the Detroit River, Lake Erie, the Niagara River, Lake Ontario, and along the St. Lawrence River from Kingston, Ontario to the Quebec boundary just east of Cornwall, Ontario.

Liberal Party is the name for dozens of political parties around the world. Liberal parties can be center-left, centrist, or center-right depending on their location. They can further be divided based on their adherence to social liberalism or classical liberalism, although all liberal parties and individuals share basic similarities, including the support for civil rights and democratic institutions.

Kathleen O. Wynne is a politician in Ontario, Canada. She is a member of the Legislative Assembly of Ontario, representing the riding of Don Valley West for the Liberal Party. She is currently Minister of Municipal Affairs and Housing and Aboriginal Affairs

Wynne holds a Bachelor of Arts degree from Queen's University, a Master of Arts degree in linguistics from the University of Toronto (1980) and a Master of Education degree in adult education from the Ontario Institute for Studies in Education. She has also completed a course in mediation training at Harvard University. She was a member of the discipline committee of the Ontario Society of Psychotherapists from 1997 to 2000.

Wynne served as president of the Toronto Institute of Human Relations. In 1996, she helped found Citizens for Local Democracy, which opposed the efforts of Ontario's Progressive Conservative government to amalgamate the City of Toronto. She also founded the Metro Parent Network (now the Toronto Parent Network) which supports improvements in the province's public education system, and has participated in numerous other community endeavours. Wynne helped found MAD for Dancing, a community fundraising group that has donated over $50,000 to organizations that support gay and lesbian youth.

Timothy Patrick "Tim" Hudak (born November 1, 1967) is a politician in Ontario, Canada, and the Leader of the Progressive Conservative Party of Ontario (PC Party). He also serves as member of the Legislative Assembly of Ontario for the riding of Niagara West—Glanbrook.

Tim Hudak was born in Fort Erie, Ontario. His father was a high school principal and his mother was a teacher. He received a bachelor of arts degree in economics from the University of Western Ontario in 1990. He then studied at the University of Washington in Seattle on a full scholarship. He received a master's degree in economics in 1993. Prior to being elected, Hudak worked on the U.S. – Canada Border from 1988 to 1993. Before entering public life, he worked for the Fort Erie Economic Development Corporation. In 1994, he was hired as a travelling manager by Wal-Mart, instructing employees on the company's policies and operating procedures.

Hudak's grandparents came to Canada from Slovakia in advance of World War II.

In the provincial election of 1995, Hudak defeated Liberal Aubrey Foley by 1,081 votes in the riding of Niagara South. The Progressive Conservatives won a majority government under Mike Harris, although Hudak was not appointed to cabinet during his first term in office. He served as parliamentary secretary to Minister of Health, Jim Wilson, and his successor, Elizabeth Witmer. During this term, the government closed 28 hospitals and fired more than 6,000 nurses, but was also able to negotiate an agreement to exempt rural and northern hospitals from closure, including four in the Niagara region.