India's opposition set to hold mega rally seeking election chief's resignation

The Election Commission said differences of opinion were normal in any institution and did not affect its functioning.

But concerns over the revision process have continued, with the opposition parties, the CJP and student groups organising a number of protests in Delhi and other Indian cities.

Last month, Congress MP and leader of the opposition Rahul Gandhi led tens of thousands of protesters in a march from Connaught Place in central Delhi to the Supreme Court, seeking the CEC's resignation.

"The march was just the trailer," a party leader told the BBC, adding that "Sunday's rally will be several times bigger than that".