The National Assembly (Serbian: Народна скупштина) is the unicameral legislature of Serbia. The assembly is composed of 250 proportionally elected deputies by secret ballot, on 4 years term. The assembly elects a president (speaker) who presides over the sessions. The National Assembly exercise supreme legislative power. It adopts and amends the Constitution, elects Government, appoints and dismisses Constitutional Court judges, president of the Supreme Court of Cassation, Governor of the National Bank of Serbia and other state officials. All decisions are made by majority vote of deputies at the session at which majority of deputies are present, except for amending the Constitution, when two thirds majority is needed. The assembly convenes in the House of the National Assembly in Belgrade.