Pavel Borisovich Axelrod was an early Russian Marxist revolutionary. Along with Georgi Plekhanov, Vera Zasulich, and Leo Deutsch, he was one of the members of the first organization of Russian Marxists, Emancipation of Labor. After the 2nd Congress of the Russian Social Democratic Labour Party, he was part of the Menshevik faction, with which he was identified until his death.

Alexander Nikolayevich Potresov was a Russian social democratic politician and one of the leaders of the Menshevik faction of the Russian Social Democratic Labour Party. He was one of six original editors of the newspaper Iskra, under the pen name "Starover".