boom in the 1950s and Calgary and Edmonton growing, single transferable vote may have been seen as too complicated, with vote counting taking days before final results could be announced. But the Social Credit government's rationale for the change away from STV and IRV was that a large number of votes were being declared spoiled. No other major social unit favored the move but the government made the change anyway. The government felt threatened by the growing number of opposition MLAs being elected (although it was still taking more than 60 percent of the seats in the Legislature). In 1959 the government returned Alberta to First past the post elections in single-member districts, last used across the province in 1905. No government has since changed the electoral system (although since then the number of members has increased from 61 to 87). In 1977 Elections Alberta was established as an independent, non-partisan office of the Legislative Assembly responsible for administering provincial elections, by-elections and referendums. 1990s The early 1990s proved to be a contentious period for delineation of electoral districts in Alberta. The Supreme Court of British Columbia ruling in Dixon v. Attorney General of British Columbia in 1989 invalidated the provincial electoral district re-distribution due to wide variations between electoral district populations for British Columbia, finding these differences inconsistent with the Charter of Rights and Freedoms. Cognizant of this the Alberta Legislature tasked a Special Committee chaired by Taber-Warner MLA Bob Bogle to evaluate the re-distribution of electoral districts in the province. The Report of the Select Special Committee on Electoral Boundaries was submitted to the Legislature in November 1990 and was referred to the Court of Appeal of Alberta. While the Court of Appeals reference found the boundaries consistent with the Charter, the report was scrapped and amendments to the Electoral Divisions Act were introduced in early 1991 to effectively "Charter-proof" the new districts. The same Select Committee was tasked with creating the new report which was presented to the Legislature in November 1992, and once again referred to the Court of Appeal of Alberta to rule on the constitutional validity of the boundaries. The four Progressive Conservative MLAs on the Select Committee (Bob Bogle, Stockwell Day, Pat Nelson, Mike Cardinal) participated fully in developing the report, while the Opposition refused to appoint any MLAs. Subsequently, the boundaries were implemented and used for the June 1993 Alberta general election.