[1] Under the Delimitation Act of 2002, the Delimitation Commission of India has redefined the list of parliamentary constituencies, their constituent assembly segments and reservation status (whether reserved for Scheduled castes (SC) candidates or Scheduled tribes (ST) candidates or unreserved).

in the states of Chhattisgarh, Madhya Pradesh, NCT of Delhi, Mizoram and Rajasthan were based on newly defined assembly constituencies.

[3] The size and shape of the Parliamentary and Assembly Constituencies are determined, according to section 4 of the Representation of the People Act, 1951, by an independent Delimitation Commission.

[5] The Delimitation Commission, set up under the Delimitation Act, 2002, was entrusted with the task of readjusting all parliamentary and assembly constituencies in the country in all the states of India, except the state of Jammu and Kashmir, based on population ascertained in 2001 Census.

Later on, the Government passed four separate Orders under Sec 10 A of the Delimitation Act, 2002, deferring the delimitation exercise in the four North Eastern states of Assam, Arunachal Pradesh, Manipur and Nagaland.