Fellow traveller
A fellow traveller (also fellow traveler) is a person who is intellectually sympathetic to the ideology of a political organization, and who co-operates in the organization's politics, without being a formal member. In the early history of the Soviet Union, the Bolshevik revolutionary and Soviet statesman Anatoly Lunacharsky coined the term poputchik ("one who travels the same path"); it was later popularized by Leon Trotsky to identify the vacillating intellectual supporters of the Bolshevik government led by Vladimir Lenin (1917–1924).