In Estonia
In 1902 the Tallinn organisation of the RSDLP was founded, which in 1904 was converted into the Tallinn Committee of the party. In November a parallel (that is, also directly under the CC of RSDLP) Narva Committee was created. Amongst other radicals, the Estonian RSDLP cadres were active in the 1905 revolution.
At the conference of the Estonian RSDLP organisations in Terijoki, Finland in March 1907 the Bolshevik supporters came into serious conflict with the Mensheviks.
Read more about this topic: Russian Social Democratic Labour Party