High Quality Content by WIKIPEDIA articles! The 21st Legislative Assembly of Saskatchewan was elected in the Saskatchewan general election held in October 1986. The assembly sat from December 3, 1986 to September 2, 1991. The Progressive Conservative Party led by Grant Devine formed the government. The New Democratic Party (NDP) led by Allan Blakeney formed the official opposition. After Blakeney resigned in 1987,Roy Romanow became NDP leader.