The partition of Quebec refers to the secession of regions of the province of Quebec, rather than to partitions in a strict political sense. It is usually discussed as a possibility in the event of Quebec secession from Canada. It was not a key issue in either the 1980 Referendum on Quebec Sovereignty or the 1995 Referendum on Quebec Sovereignty, but dominated the politics of national unity for about two years in the aftermath of the second referendum. Since then, the issue has occasionally resurfaced (for example in the 2007 provincial election).
Broadly speaking, partition proposals have tended to fall into three categories:
The partition movement dates from May 1976, when William Shaw, a candidate for the leadership of the Union Nationale, proposed the idea in a series of interviews with journalists. Writing several years later, Shaw recounted one of these interviews: "I said to the journalist at that time, ‘I want to introduce a new word into the lexicon of Canadian politics—PARTITION. The threat of partition will prevent separation.’"
In December 1976, an organization called the "Preparatory Committee for an Eleventh Province" was formed in Montreal. This group contained some individuals who believed, along with Shaw, that the threat of a partition in which some parts of Quebec would remain within Canada would weaken support for separation.
Other members of the Preparatory Committee sought to create a new province out of the linguistically mixed parts of Quebec even if Quebec were to remain in Canada, in order to create a new, bilingual province. This faction within the early partition movement bears some resemblance to the movements that have arisen from time to time in parts of some Canadian provinces to break away and form new provinces. For example, also in the 1970s, there was a movement, led by the Parti Acadien, to create a new Acadian province out of northern New Brunswick.