Party sources indicated that Bose may vacate the post during the state conference in Kolkata early next month.

Former actresses Moonmoon Sen and Sandhya Roy and singer Babul Supriyo are expected to give a tough fight in three of the six seats.

Probodh Panda and Atul Kumar Anjaan are among 39 candidates declared by CPI for the upcoming Lok Sabha polls.

CPM is depending heavily on Rabin Deb to fight Mamata.