NEW DELHI  - India's ruling Congress party has decided to press ahead with a nuclear energy deal with the United States despite threats by its left-wing allies to bring down the coalition, officials said Thursday. Faced with losing its majority in parliament because of communist opposition to the pact, PM Manmohan Singh's Congress party has been trying to strike a deal with other parties that would keep it in office. Indian media said the socialist Samajwadi Party (SP), from the key northern state of Uttar Pradesh and which has 39 MPs in the 545-member national parliament, has signaled a deal on reshaping the coalition was close. The talks came as Communist leader AB Bardhan told reporters his party had asked other left-wing allies to "consider the modalities of withdrawing support" to Singh's government during a meeting on Friday. A senior Congress leader who wished to remain unnamed said his party was "talking to a number of parties including the Samajwadi Party to secure support" and avoid early elections. "The meeting between SP leaders and the national security advisor yesterday was part of this. We are going ahead with the (nuclear) deal," he said. Though the Samajwadi Party did not offer a clear pledge of support to Singh's administration on Wednesday, it was expected to make a formal announcement after consultations Thursday. The nuclear deal - agreed in principle in 2005 - would allow India to buy atomic power plants and technology despite not signing international non-proliferation pacts. Prime Minister Singh argues the pact is crucial for India's energy security. Tensions between Singh and the communists have been running high for months, and the likelihood of early elections - ahead of May 2009 as scheduled - has been seen as increasing after a crisis meeting last week between Congress and the left failed to resolve the spat. The United States has been pressing India to move on the deal before the end of President George W Bush's tenure, warning the pact may not survive in its current form under the next administration. Political analysts however said it was likely that the Congress party would be able to muster the numbers to survive and carry the pact forward while putting off early polls. "The SP has been saying the main challenge is to keep communal forces at bay," said political analyst and author Rasheed Kidwai. "This means they would like to ensure that the Congress government survives and keeps the (opposition Hindu nationalist) Bharatiya Janata Party out."