Since party politics were introduced to British Columbia, there have been a number of political parties which have controlled the government for more than ten years, including the Conservative government of the early 20th century, the interwar Liberal government, the post-war Social Credit ("Socred") government of W.A.C. Bennett and, following a further brief reign by the New Democratic (NDP), another Social Credit government under his son, Bill Bennett, the NDP government of the 1990s and the BC Liberal Party Government in the 2000s under Gordon Campbell.