Congress chief Sonia Gandhi, Mallikarjun Kharge make joint appearance at Raj Ghat

Meanwhile, Congress spokespersons Deepender Hooda, Gaurav Vallabh and Syed Naseer Husain said they have 'resigned' from the party posts to campaign for Kharge because the "neutral" leadership remained "committed to a free and fair" poll. While they flanked Kharge at his press conference, they would accompany him during his visits to states for campaigning.