The Senate of Howland is the upper house of the bicameral National Assembly of Howland. The House of Representatives is the lower house. The Senate consists of 27 members, called Senators. The senators are popularly elected under a modified party-list single transferable vote system of proportional representation. Senators serve fixed six-year terms, with elections staggered such that one-third of the Senate faces election every two years. Like the House of Representatives, elections are held on the last Saturday in June.