India, May 23 -- With the Special Intensive Revision (SIR) of electoral rolls set to begin soon in Maharashtra, the Election Commission of India (ECI) has clarified that proving nationality is a constitutional obligation for eligibility to vote, amid demands from the opposition that the process must not be used to ask residents for citizenship proof.

Voters can prove their nationality by submitting any one of the 11 specified documents, said S Chockalingam, the chief electoral officer (CEO) of Maharashtra. He also clarified that an Aadhaar card cannot be treated as proof of citizenship, but can serve as proof of identity.

The ECI is implementing the SIR for Maharashtra's 98.6 million existing voters between June 30 and July 29, after wh...