Instead of daring Congress, the Left must seriously worry about continuing its existence in India.
Even if Congress is to lose votes in the elections, these votes will go to some other party, certainly not to the Leftists. Leftists are going to end up with a much worse total after the elections, compared to Congress. Congress may get hurt, but will manage to survive. Communists will become a 'nobody' after the elections. They should be worried about their own survival!