 Initially the party was known as the Latvian Social Democratic Workers' Party (LSDSP).During its second party congress in 1905 it adopted the programme of the Russian Social Democratic Labour Party (RSDLP) as its own.At the Fourth Congress of the RSDLP in 1906, the LSDSP entered the RSDLP as a territorial organisation, and after the congress its name was changed Social-Democracy of the Latvian Territory.