The main opposition partyBharatiya Janata Party which laid the groundwork for the deal criticized the deal saying that the deal in its present form was unacceptable to the BJP and wanted the deal renegotiated. The BJP had asked the government not to accept the deal without a vote in the parliament. However, the government remained steadfast on its commitment to the deal and has refused to back down on the agreement. Veteran BJP leader Lal Krishna Advani, in a statement to the Indian Express newspaper, seemed to indicate willingness to support the government provided some legislative measures. However his party refused to follow that line and stuck to its earlier stand.
Supply of uranium and testing-bans
reported:
Left Front
The primary opposition to the nuclear deal in India, however, comes from the Communist Party of India and its parliamentary allies November 17 the left parties had provisionally agreed to let the government initiate talks with the IAEA for India specific safeguards which indicated that they may support. The CPI, an external parliamentary supporter of government as it stipulates conditions that in some areas are more severe than the clauses in either the NPT or the CTBT. They alleged that the deal would undermine the sovereignty of India's foreign policy and also claimed that the Indian government was hiding certain clauses of the deal, which would harm India's indigenous nuclear program, from the media. On July 9, 2008, the Left Front withdrew support to the government reducing its strength to 276 in the Lok Sabha. The government survived a confidence vote in the parliament on July 22, 2008 by 275-256 votes in the backdrop of defections from both camps to the opposite camps.
The United Nationalist Progressive Alliance was divided over support of the nuclear deal. While the Samajwadi Party supported it after consultations with Abdul Kalam, the other members of the UNPA led by the Telugu Desam Party opposed it saying that the deal is against India's interest. The SP was eventually suspended from the UNPA.
The Bahujan Samaj Party also opposed the nuclear deal, saying that it was anti-Muslim. The party joined hands with the Left Front and the TDP in voting against the government in Parliament on the nuclear deal.
Others
In 2006, some Indian ex-nuclear scientists had written an appeal to Indian Members of Parliament to ensure that "decisions taken today do not inhibit India's future ability to develop and pursue nuclear technologies for the benefit of the nation". Various Indian political and scientific personalities have repeatedly expressed concerns that the United States may use the India-US civilian nuclear agreement as a diplomatic weapon if Indian foreign policy was not in conformity with geopolitical interests of the US.