TMC all-India general secretary Mukul Roy said in Kolkata ealier in the day that Manmohan Singh-government has become a "minority" after DMK's withdrawal of support.
"They can remain in power by utilising the number game in Parliament. But it first became a minority government when Trinamool Congress withdrew support last year and now by DMK. This government has no moral right to continue in office for a single moment... We want this government to resign immediately," he said.
TMC, which was the second largest constituent of UPA after Congress and has 19 Lok Sabha members, had withdrawn support from UPA government in September last year.
BJP MP Balbir Punj alleged the government has lost the mandate to rule.
"Government will not complete is full term and snap poll is inevitable. Irrespective of what the Prime Minister says, the fact is that there is an atmosphere of instability about the government in the country. This is why you have various people speaking about early elections.
"This government has lost the mandate from the people to rule and now its numbers in the House, that is Lok Sabha, is also suspect. The country is passing through a phase of complete instability," he said.