Parliamentary oppositionParliamentary opposition is a form of political opposition to a designated government, particularly in a Westminster-based parliamentary system. This article uses the term government as it is used in Parliamentary systems, i.e. meaning the administration or the cabinet rather than the state. In some countries, the title of "Official Opposition" is conferred upon the largest political party sitting in opposition in the legislature, with said party's leader being accorded the title "Leader of the Opposition".
Shadow cabinetThe shadow cabinet or shadow ministry is a feature of the Westminster system of government. It consists of a senior group of opposition spokespeople who, under the leadership of the Leader of the Opposition, form an alternative cabinet to that of the government, and whose members shadow or mirror the positions of each individual member of the Cabinet. Their areas of responsibility, in parallel with the ruling party's ministries, may be referred to as a shadow portfolio. Members of a shadow cabinet have no executive power.
Westminster systemThe Westminster system or Westminster model is a type of parliamentary government that incorporates a series of procedures for operating a legislature, first developed in England. Key aspects of the system include an executive branch made up of members of the legislature, and that is responsible to the legislature; the presence of parliamentary opposition parties; and a ceremonial head of state who is different from the head of government. The term comes from the Palace of Westminster, the current seat of the Parliament of the United Kingdom.
Political partyA political party is an organization that coordinates candidates to compete in a particular country's elections. It is common for the members of a party to hold similar ideas about politics, and parties may promote specific ideological or policy goals. Political parties have become a major part of the politics of almost every country, as modern party organizations developed and spread around the world over the last few centuries. It is extremely rare for a country to have no political parties.