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”.
Ahead of the rally, Gandhi said their protest was against “the demolition of Indian democracy”, adding that “all the opposition parties and everybody who wants to come, political or non-political, is welcome”.
“There is huge anger, huge emotional pain because millions are being disenfranchised,” he said.
“We are all standing together because we are defending the Constitution. We are defending the idea of India. We are defending the vote, which is the expression of all Indians.”