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.
6-7-2017 See Article History. The U.S. Congress consists of two houses, the House of Representatives and the Senate. Each state elects two senators, while seats in the House of Representatives are apportioned by state according to population, with each state receiving a minimum of one representative. After each decennial census, the House of Representatives used to increase in size, but in the 1910s overall membership was capped at 435 (it expanded temporarily to 437 after Alaska and Hawaii were admitted as states in 1959).