The Left Front has been ruling Tripura since 1993 -- Chief Minister Manik Sarkar is on his fourth consecutive term. The Communists have as many as 51 legislators in the 60-member assembly. Yet the BJP's aggressive campaign has ruffled feathers.
"The BJP has grown in Tripura at the expense of the Congress and the Trinamool Congress. For the Left, they have become the party to watch out for," said Gautam Das, the spokesperson for the Left front in the state.
Calling the situation a "challenge, CPM's Pabitra Kar, the Deputy Speaker of the assembly, said, "The BJP used to get 3 or 4 per cent votes earlier. Now a lot of Congress and TMC leaders have joined them."
With anti-incumbency setting in, the Left Front has already started connecting to the voters for the 2018 assembly elections, where BJP plans to capture power.
The TMC, which is the main opposition in Tripura, has six legislators who switched over from the Congress. This group is almost ready to change sides again - this time to the BJP.
"We have made it clear to our leadership that if they don't agree to our proposal of support to the BJP, we will have to think of options," said Sudip Roy Burman, a key TMC leader who is the Leader of the Opposition in the state.