The National Assembly of Cascadia is the lower house of the Parliament of Cascadia, which also includes the National Council of Cascadia, the upper house. There are currently 360 members of the National Assembly. Cascadia uses proportional representation, so multiple members (on average 12) are elected from an electoral district, and then distributed by percentage of vote. All members hold their seats until they resign or until the next legislative election, which must happen every four years.