The National Assembly is one of the two components of the Parliament of Guyana. Under Article 51 of the Constitution of Guyana, the Parliament of Guyana consists of the President and the National Assembly. The National Assembly has 65 members elected using the system of proportional representation. Twenty five are elected from the ten geographical constituencies and forty are awarded at the national level on the basis of block votes secured, using the LR-Hare Formula as prescribed by the elections Laws (Amendment) Act 15 of 2000 (Sections 11 and 12).
The Ninth Parliament came to an end in September 2011 before the holding of the 2011 General Elections, and was followed by the Tenth Parliament of Guyana, whose first sitting was held on January 12, 2012 following a proclamation by President Donald Ramotar. In this sitting the Speaker (Raphael Trotman of the AFC) and Deputy Speaker (Deborah Backer of APNU) were elected, and MPs sworn in. Deborah Backer resigned from the National Assembly and was replaced as deputy speaker by Basil Williams of the same party.