The leader of the New Democratic Party of Ontario is Andrea Horwath.

Ontario New Democratic Party was created on 1961-10-08.

she belongs to the new democratic party (ndp) and she is the leader of new democratic party of ndp and she is the first women to serve ontario and she was the leader of ndp from 2009.

Aside from the current ruling party, Canada also has oppositional parties and leaders as well. Provincial Canadian oppositional parties include the New Democratic Party (NDP) headed by Tom Mulcair. The Liberal Party of Canada is headed by Bob Ray, and the Bloc Quebecois is headed by Daniel Paille.

John Terence Morley has written:

'Secular socialists' -- subject(s): 1923-1961, 1961-, Co-operative Commonwealth Federation, Co-operative Commonwealth Federation. Ontario Section, Cooperative Commonwealth Federation. Ontario Section - History, New Democratic Party of Ontario, New Democratic Party of Ontario - History, Politics and government