Chennai, Nov. 24 -- When K Nagarajan, a retired real estate manager based in Chennai submitted enumeration forms of his and five members of the family's verification under the ongoing special intensive revision (SIR) to local booth level officers (BLOs), they warned him that his two daughters-in-law, M Tamilselvi and S Subhasini, may be disenfranchised, owing to the lack of documentation in the previous SIR from 2005. Tamilselvi's parents died five years ago in Bengaluru.

"How can we possibly get something like that from parents who are dead in another state?" asked Nagarajan.

"They have their Aadhaar cards, voter IDs, bank accounts and yet the BLOs are saying their forms will be rejected because we can't fill the details from 2005. I'm...