Legislative size (voting members)

Representation of the People Act, 1964

Section 11(1): The National Assembly shall contain sixty-five elected members, and their election shall be on a party lists basis to which the system of proportional representation shall be applied; in this section and in section 11C the system of proportional representation referred to is known as the largest remainder system using the “Hare quota”.

Inter-Parliamentary Union Parline Database: Guyana, http://www.ipu.org/parline-e/reports/2135_A.htm

A maximum of four non-elected ministers and two non-elected Parliamentary Secretaries may sit in the National Assembly. If the Speaker is not an elected member, he or she becomes a member of the National Assembly by virtue of holding the office of Speaker. The National Assembly may thus have up to 72 members. 

There are currently 69 members of parliament, 65 of which directly elected.