The SKSD was formed in 1969 by sympathizers of the Revolutionary Socialist Party of India in East Pakistan.
[1] In April 1983, the SKSD joined the 15-party alliance, which included the Awami League, to oppose the Ershad regime.
The alliance contested the June 1996 and 2001 general elections, but failed to win any seat.
[2] In the 2001 parliamentary elections, Nirmal Sen was the sole SKSD candidate.
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