The term of the 294-member West Bengal Assembly ends on May 29 and elections are likely to be held before that.
A bill to amend The Delimitation Act of 2002 and Representation of the People Act, 1950 could be brought in the Budget session beginning February 23, sources said.
Home Minister Rajnath Singh will hold a meeting with senior officials, including those of the Legislative Department in the Law Ministry, tomorrow where a final call on the issue could be taken. The Department administers the two laws.
Following delimitation, these people will be made voters of Assembly and parliamentary constituency.
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India and Bangladesh had exchanged 162 adversely-held enclaves on the midnight of July 31 last.
There were 111 Indian enclaves in Bangladesh and 51 Bangladeshi enclaves in India which were exchanged pursuant to the 1974 Land Boundary Agreement and 2011 Protocol and instruments of ratification, which were exchanged during Prime Minister Narendra Modi's visit to Bangladesh on June 6-7, 2015.
On an earlier occasion, EC was granted special, limited powers of delimitation in 2013 when the then UPA government had brought an ordinance to allow the poll watchdog carry out such an exercise in SC/ST constituencies.
The Readjustment of Representation of Scheduled Castes and Scheduled Tribes in Parliamentary and Assembly Constituencies Ordinance 2013 was promulgated to bring a 2012 Supreme Court judgement into effect.