Congress-Trinamool alliance on shaky ground? Kolkata: The Congress-Trinamool alliance in West Bengal is on shaky ground. TMC chief Mamata Banerjee threatened to go it alone after the West Bengal Congress Chief's scathing attack on the TMC in the Congress plenary session. Some local Congress leaders are also against a grand alliance with the Trinamool Congress in the upcoming assembly elections. Mamata Banerjee is not willing to budge an inch. The big question is whether the Congress high command in Delhi will buy the views of their local leadership after the June debacle in the civic polls in West Bengal. The resounding victory of the Trinamool Congress in the municipal elections in June and near decimation of their ally Congress ensured temporary silence from Congress leaders in Bengal. But on Sunday, at the Congress plenary in New Delhi, that code was broken. Former Union Minister Priyaranjan Das Munshi's wife Deepa launched a scathing attack on Trinamool, accusing Trinamool Chief Mamata Banerjee of running a disrespectful alliance. Trinamool retailiated on Monday, after a core committee meeting of the party in Kolkata threatening to go alone. The statistics are stacked in the favour of Trinamool right now. In the civic elections, dubbed as a semi-final to next year assembly polls, Trinamool inflicted a crushing defeat on the ruling Left Front. Riding the winds of political change, Trinamool's gains also left ally Congress insignificant. The Congress which had decided to field candidates in all seats after local leaders objected to seat-distribution formula by Trinamool. Political equations have substantially changed in Bengal in the last four years. The Trinamool has a clear upper-hand and after the disastrous municipal elections, it will be upto the Congress high command to decide whether they accept the small number of seats that Mamata banerjee doles out to them.