Caucus - in Commonwealth Nations

In Commonwealth Nations

The term is used in Canada and New Zealand. In Australia the term is used only by the Australian Labor Party. However, when used in these countries, "caucus" is more often a collective term for all members of a party in Parliament, usually called a parliamentary group, rather than a word for a regular meeting of these Members of Parliament. Thus, the Australian Federal Parliamentary Labor Party is commonly called "the Labor Caucus."

The word was introduced to Australia by King O'Malley, an American-born Labor member of the first federal Parliament in 1901; it presumably entered New Zealand politics at a similar time. In New Zealand, the term is used by all political parties, but in Australia, it is restricted to the Labor Party. For the Australian Liberal and National parties, and for all parties in the UK and the Republic of Ireland (not a Commonwealth country), the usual term is "parliamentary party".

In Canada, caucus refers to all members of a particular party in Parliament, including senators, or a provincial legislature. These members elect among themselves a caucus chair who presides over their meetings. This person is an important figure when the party is in opposition and an important link between cabinet and the backbench when the party is in government.

In a Westminster System, a party caucus can be quite powerful, as it can elect or dismiss the party's parliamentary leader. The caucus also determines some matters of policy, parliamentary tactics, and disciplinary measures against disobedient MPs. In some parties, the caucus also has the power to elect MPs to Cabinet when the party is in government. For example this is traditionally so in the Australian Labor Party and the New Zealand Labour Party.