Number of tiers

Constitution of Zambia 1996

http://aceproject.org/ero-en/regions/africa/ZM/Constitution%20of%20Zambia%201996.pdf/view

77. [Constituencies and elections]

(1) Zambia shall be divided into constituencies, for purposes of elections to the National Assembly so that the number of such constituencies, the boundaries of which shall be such as an Electoral Commission prescribes, shall be equal to the number of seats of elected members in the National Assembly.

 (3) Each constituency shall return one member only to the National Assembly.