Communist Party of Lithuania
In 1988, he became the first secretary of the Communist Party of Lithuania. Under his leadership, the majority of the Communist Party of Lithuania supported the Lithuanian independence movement, broke away from the Communist Party of the Soviet Union and transformed itself into social-democratic Democratic Labour Party of Lithuania (now merged into the Lithuanian Social Democratic Party). Brazauskas was Chairman of the Presidium of the Supreme Soviet (head of state) from 15 January until 11 March 1990.