The Leader of the Opposition is a title traditionally held by the leader of the largest party not in government in a Westminster System of parliamentary government. The Leader of the Opposition is invariably seen as the alternative Prime Minister to the present incumbent, and heads a rival alternative government known as the Shadow Cabinet or Opposition Front Bench. The Westminster System is a democratic system of government modeled after that of the United Kingdom system, as used in the Palace of Westminster, the location of the UK parliament. ... A prime minister may be either: chief or leading member of the cabinet of the top-level government in a country having a parliamentary system of government; or the official, in countries with a semi-presidential system of government, appointed to manage the civil service and execute the directives of... The Shadow Cabinet (also called the Opposition Front Bench) is a senior group of opposition spokespeople in the Westminster System of government who together under the leadership of the Leader of the Opposition (or the leader of other smaller opposition parties) form an alternative cabinet to the governments, whose... In many parliaments and other similar assemblies, seating is typically arranged in banks or rows, with each political party or caucus grouped together. ...
In many Commonwealth Realmmonarchies, the full title is Leader of Her Majesty's Loyal Opposition. A Commonwealth Realm is any one of the 16 sovereign states of the Commonwealth that recognise Queen Elizabeth II as their Queen and head of state. ... A monarchy, (from the Greek monos, one, and archein, to rule) is a form of government that has a monarch as Head of State. ...