Leaders of Opposition parties including Sonia Gandhi, Rahul Gandhi, Akhilesh Yadav, Mamata Banerjee, MA Baby and Tejashwi Yadav, among a dozen others, as well as the ruling BJP are holding rival marches in Delhi with the Opposition targeting the Election Commission over alleged electoral roll irregularities and the ruling party raising the 1984 anti-Sikh riots to attack the Congress.