1975 Ontario general election

The 1975 Ontario general election was held on September 18, 1975, to elect the 125 members of the 30th Legislative Assembly of Ontario (Members of Provincial Parliament, or "MPPs") of the Province of Ontario, Canada.

1975 Ontario general election

September 18, 1975
125 seats in the 30th Legislative Assembly of Ontario 63 seats were needed for a majority
First party Second party Third party   Leader Bill Davis Stephen Lewis Robert Nixon Party Progressive Conservative New Democratic Liberal Leader since February 12, 1971 October 4, 1970 January 6, 1967 Leader's seat Brampton Scarborough West Brant—Oxford—Norfolk Last election 78 19 20 Seats won 51 38 35 Seat change 27 19 15 Percentage 36.1% 28.9% 34.3% Swing 8.4pp 1.8pp 6.5pp
Premier before election Bill Davis Progressive Conservative Premier after election Bill Davis Progressive Conservative

The Ontario Progressive Conservative Party, led by Bill Davis and campaigning under the slogan, "Your Future. Your choice.", won a tenth consecutive term in office. It lost its majority in the legislature, however, for the first time since the 1945 election. The PC Party lost 27 seats from its result in the previous election.

The social democratic Ontario New Democratic Party, led by Stephen Lewis with the slogan "Tomorrow starts today", doubled its representation in the legislature, and became the Official Opposition on the strength of a campaign which called for rent control in Ontario and highlighted horror stories of individuals and bad landlords who imposed exorbitant rent increases. The campaign forced the Davis' Tories to promise to implement rent controls shortly before the election.

The Ontario Liberal Party, led by Robert Nixon, won 15 additional seats, but lost the role of Official Opposition to the NDP. One member of its caucus was elected as a Liberal-Labour candidate.