In a parliamentary system, by contrast, the legislature holds supreme power. The prime minister is chosen by members of the legislature (Parliament) from among their own number and in practice is the leader of the majority party in the legislature.
There are 435 Representatives in the House of Representatives. The number of members in the House of Representatives is a different story and is based on population.
The House of Representatives currently consists of 150 members, elected by and who represent single member districts, known as electoral divisions (commonly referred to as electorates or seats).