The Left Front wrested the Nalhati constituency in the by-poll from the Congress, which had won the seat in the 2011 Assembly election, when it had an alliance with the TMC.
Likewise, the victory of the Congress and the TMC in English Bazar and Rejinagar constituencies respectively, showed that their victory margins could have been much higher if they had fought unitedly.
"Why should we forge an alliance with the Trinamool? It is they who had back-stabbed us. They won the Assembly polls with our support but after winning, they showed their true colours and betrayed us. I don't think there is any possibility of forging an alliance in near future," Bhattacharya told PTI.
Trinamool Congress general secretary Mukul Roy's also reacted strontly.
"We don't want any alliance with an anti-people party like the Congress. That is why we broke away from the UPA protesting against anti-people policies. The by-poll results have shown that we are growing in north Bengal and we don't want to stop that by forging an alliance with the Congress," he told PTI.