The United States Congress has Representatives.
United States Congress . The Congress meets in the Capitol in Washington , D.C. Both senators and representatives are chosen through direct election , though vacancies in the Senate may be filled by a gubernatorial appointment . The House of Representatives has six non-voting members in addition to its 435 voting members . The members of the House of Representatives serve two-year terms representing the people of a single constituency , known as a `` district '' . Congressional districts are apportioned to states by population using the United States Census results , provided that each state has at least one congressional representative .