Съезд народных депутатов СССР
Landsbergis entered politics, in 1988, as one of the founders of Sąjūdis, the Lithuanian pro-independence political movement. In 1989 elections to the Congress of People's Deputies of the Soviet Union, Landsbergis was elected as one of the People's Deputies from Lithuanian SSR. After Sąjūdis' victory in the 1990 elections, he became the Chairman of the Supreme Council of Lithuania.