Leader of the Opposition

The Leader of the Opposition is the name given to the leader of the largest party not in government in a Westminster System of parliamentary government. The Leader of the Opposition is often seen as the alternative Prime Minister, Premier or Chief Minister. They lead an alternative government known as the Shadow Cabinet or Opposition Front Bench.
In many Commonwealth realms the full title is "Leader of Her Majesty's Loyal Opposition". This is not used in Australia. It is the duty of the Opposition party to ask questions to the Prime Minister or other ministers during Question Time.
The following is a list of Leaders of the Opposition: