Quebec general election, 1966

The Quebec general election of 1966 was held on June 5, 1966, to elect members of the Legislative Assembly of Quebec, Canada. The Union Nationale (UN), led by Daniel Johnson, Sr, defeated the incumbent Quebec Liberal Party, led by Jean Lesage.

In terms of the number of seats won, the election was one of the closest in recent history, with the UN winning 56 seats to the Liberals' 50. Generally, Quebec's first past the post electoral system tends to produce strong disparities in the number of seats won even if the popular vote is fairly close. The Liberals won 6.5% more votes, but were denied a third term because rural areas were slightly overrepresented in the legislature.

The victory of the UN over the popular Lesage government was a surprise to many observers. Johnson's campaign was likely helped by his position that Quebec should get a better deal within the Canadian confederation, or should separate if it is unable to do so. In this sense, the forces of Quebec nationalism unleashed by the Quiet Revolution begun by Lesage may have contributed to his defeat, as many rural voters felt chagrin at the rapid pace of reform under the Liberals.

The pro-independence Rassemblement pour l'indépendance nationale and Ralliement national obtained a combined total of just under 9% of the popular vote (but no seats).

This was the last election for the "Legislative Assembly of Quebec". Legislation was passed to replace the bicameral system of Legislative Assembly and Legislative Council of Quebec with a single National Assembly of Quebec, effective December 31, 1968.

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