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Unicameralism is the practice of having only one legislative or parliamentary chamber.

Many countries with unicameral legislatures are unitary states and consider an upper house or second chamber unnecessary.

In many instances these states had a second chamber and subsequently abolished it. This is either because an elected upper house had duplicated the lower house and obstructed the passing of legislation, like the Landsting in Denmark (abolished in 1953), or because an appointed chamber had proven ineffectual, like the Legislative Council in New Zealand (abolished in 1951).

Unicameralists argue that the functions of a second chamber, such as reviewing or revising legislation, can be performed by parliamentary committees, while further constitutional safeguards can be provided by a written Constitution.

Examples of single chamber parliaments or legislatures

Some of the subnational entities with unicameral legislatures include Nebraska in the United States, Queensland in Australia, all of the provinces and territories in Canada, and all of the German Bundeslšnder (Bavaria having dropped bicameralism in 1999).

In the United Kingdom, the devolved Scottish Parliament, National Assembly for Wales and Northern Ireland Assembly are also unicameral.

Virtually all city legislatures are also unicameral in the sense that the city councils aren't divided into two chambers. Until the turn of the 20th century, bicameral city councils were common in the United States.

See also: Bicameralism, Tricameralism, List of national legislatures

Last updated: 02-06-2005 19:32:52
Last updated: 02-22-2005 02:26:39