From West Bengal, Trinamool Congress members Abir Ranjan Biswas, Subhasish Chakraborty, Mohammed Nadimul Haque and Santanu Sen, and Congress member Abhishek Manu Singhvi are retiring from the Upper House of Parliament.
While Haque will be sent to Rajya Sabha again, Biswas, Chakraborty and Sen have been dropped.
The biennial Rajya Sabha polls will be held on February 27 for 56 seats.