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.
House of Representatives vs. Senate. The United States Congress is the legislative branch of the federal government and consists of two houses: the lower house known as the House of Representatives and the upper house known as the Senate. The words Congress and House are sometimes used colloquially to refer to the House of Representatives. There are 535 members of Congress: 100 senators and 435 representatives in the House. Republicans currently control the Senate (54 to 44 Democrats) and the House (246 to 188).