 A member of the House may be referred to as a "Member of Parliament" ("MP" or "Member"), while a member of the Senate is usually referred to as a "Senator".The government of the day and by extension the Prime Minister must achieve and maintain the confidence of this House in order to gain and remain in power.The House of Representatives currently consists of 151 members, elected by and representing single member districts known as electoral divisions (commonly referred to as "electorates" or "seats").