The Popular Socialist Party (Russian: Трудовая народно-социалистическая партия, romanized: Trudovaya Narodno-Sotsialisticheskaya Partiya, lit.

The roots of the Popular Socialist Party (NSP) lay in the 'Legal Populist' movement of the 1890s, and its founders looked upon N.K.

Furthermore, the Popular Socialists deplored the influence of Marxism on the leading ideologues of the PSR, such as V.M.

The Popular Socialists collaborated closely with the Trudoviks (Labour Group), Kerensky's party in the State Duma.

After the February Revolution of 1917, the Popular Socialist Party merged with the Trudoviks and actively supported the Provisional Government, in which it was represented.