Politics of Alberta are centred on a provincial government resembling that of the other Canadian provinces, namely a constitutional monarchy and parliamentary democracy. The capital of the province is Edmonton, where the provincial Legislative Building is located.
The unicameral legislature, the Legislative Assembly of Alberta, has 87 members. Government is conducted after the Westminster model. The provincial government's revenue, although it is often described as predominantly coming from the province's resource base, actually is derived from a variety of sources. Nonrenewable resource revenue provided the government with 24 percent of its revenue in 2010-11, with about the same coming from individual income tax, 14 per cent from grants from the federal government, and about eight percent coming from both corporations and the government's own business activities. Alberta is the only province in Canada without a provincial sales tax (see also Sales taxes in Canada).
Alberta has a system of municipal government similar to that of the other provinces.
Alberta was swept up in the wave of "prairie populism" that took place after World War I; from 1921 to 1935 the United Farmers of Alberta headed the longest-lived of the farmers' governments that won power in Canada during this time. However, for over 80 years, the province was governed by right-wing parties, which began in 1935, with Social Credit, which were succeeded in 1971 by the Progressive Conservatives. Ralph Klein was premier of Alberta from 1992 to 2006 and despite making many controversial statements and having had problems with alcohol, he remained the leader of the Progressive Conservative party and thus the province although only 55% of delegates from his party signified their approval of his leadership on the spring of 2006, pushing him into early retirement.