This is an excellent article by John Kilcullen .. tickle ..
A Comparison of the Australian, British, and American Political Systems
The Australian political system is in some ways like the British, in others like the American.
1. Like the American system ours is federal: i.e., there are two levels of government, neither of which can change the powers of the other or make laws within certain fields assigned to the other. The British system is 'unitary': the British parliament can make laws on any matter, local government has whatever powers the national government delegates to it.
2. Like the British, ours is a system of responsible government. The Government (the Prime Minister and cabinet) is 'responsible' to parliament. This means that at any time, simply by vote of no confidence, carried on whatever grounds, the parliament can remove the Government from office or force it to call an election. In the American system the head of the executive Government, the President, cannot be removed by the Congress (except by impeachment, which requires a kind of trial). .. continued .. http://www.humanities.mq.edu.au/Ockham/y67xan1.html ..
Note: our political systems are mix and match with one important difference .. Australian politicians do not have fixed terms ..