The by-elections will be held on November 19, the Election Commission anounced today.
TMC secretary-general Partha Chatterjee said that Dibyendu Adhikari, party MLA from Kanthi Dakshin will contest from Tamluk Lok Sabha constituency from where his brother Suvendu Ahdikari had won in the 2014 Lok Sabha poll.
The by-poll in Monteswar Assembly seat became necessary after the death of sitting TMC MLA Sajal Panja.
Saikat Pnaja, who was nominated by TMC for Monteswar Assembly by-poll, is the son of Sajal Panja.
The by-poll in Cooch Behar seat was necessitated by the death of TMC sitting member Renuka Sinha.