Tambunan begin his career in the Indonesian legislative when he was chosen in the Working Body of the Central Indonesian National Committee as regional delegation on 27 November 1945 . He became its member until the dissolution of the committee . He went to be the vice chairman of the People 's Representative Council of the United States of Indonesia , and the Temporary People 's Representative Council . In the 1955 Indonesian legislative elections , he was elected as the member of the People 's Representative Council from Parkindo , representing North Sumatra electoral district . Tambunan was chosen as the general secretary of the Indonesian Christian Party at its first congress from 6 – 8 December 1945 in Surakarta . He handed the position to Martinus Abendego after he was re-chosen as the Central Indonesian National Committee in 1947 . Seventeen years later , he was chosen as the chairman of the party at its 7th congress
first congress
1st Congress of the National Christian Party
Albert Mangaratua Tambunan