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In 1934 there was a split in the ILP as some of the opponents of the RPC, led by John Middleton Murry and Elijah Sandham, left to form the Independent Socialist Party.
After creating his own minor grouping, the Socialist Party of Workers (later known as Independent Socialist Party), in 1928, Cristescu joined the minor and Unitary Socialist Party in 1932 (a Marxist group led by Leon Ghelerter, Ștefan Voitec, and Constantin Popovici, it eventually dissolved itself under pressure from the Communist Party in 1944).