The Election Commission (EC) on Thursday asked 18 states and four Union Territories (UTs) to complete background work in preparation for the Special Intensive Revision (SIR) soon.
Once the SIR in these places—which it said was "expected to start from April" is completed—all states and UTs will be covered, a PTI report said.
The EC's letter was addressed to the Chief Electoral Officers (CEOs) of Andhra Pradesh, Arunachal Pradesh, Chandigarh, Dadra and Nagar Haveli & Daman and Diu, Haryana, Himachal Pradesh, Jammu and Kashmir, Jharkhand, Karnataka, Ladakh, Maharashtra, Manipur, Meghalaya, Mizoram, Nagaland, Delhi, Odisha, Punjab, Sikkim, Tripura, Telangana and Uttarakhand.
The poll authority also said that the pan-Indian SIR process for voter lists had been ordered in June last year.
(More details are awaited.)