In the June by-election, Trinamool candidate and former international footballer Prasun Banerjee defeated Communist Party of India-Marxist candidate Sridip Bhattacharya.
The BJP opted out of the race after naming its former state president Asim Ghosh as the party candidate.
The Left and the Congress alleged that the BJP called it quits after secret parleys with the Trinamool.
He also claimed the Trinamool Congress' public posture on the new land acquisition legislation was vastly different from its private posture.
