Parties such as Samajwadi party, BSP and RJD have registered their Opposition to the Bill in the present form as they demand for an amendment to accommodate a 'quota within quota' for the backward classes and the minorities.
SP supremo Mulayam Singh Yadav, BSP chief and Uttar Pradesh Chief Minister Mayawati, JD(U) president Sharad Yadav and RJD strongman Lalu Prasad are the prominent leaders in the Opposition faction.
The Bharatiya Janata Party (BJP), on the other hand, has made it clear that the Bill will only get the party's support if the Bill is passed in its present form.
CPI-M politburo member Brinda Karat has promised her party's 100 per cent support for the Bill.
Prime Minister Manmohan Singh has also expressed confidence that the Bill, which promises 33 per cent reservation for Women in Lok Sabha and the state assemblies, will see the support it requires.
The Bill's 14-year-long struggle will end on Mar 8 if the government manages to claim favourable numbers for the Bill to be passed.