Parti ouvrier français
The PSR was the new name given, in 1898, to the Central Revolutionary Committee (CRC), a blanquist party founded in 1881. The CRC had been strengthened by the formation of the Revolutionary Communist Alliance (ACR) by dissident members of the reformist Revolutionary Socialist Workers' Party (POSR). Due to the support of the ACR, the PSR became the second largest Marxist political party in France behind the French Workers' Party.