New Delhi: Congress leaders Gourav Vallabh, Deepender Hooda, and Syed Naseer Hussain on Sunday announced their resignations as party's spokespersons to campaign for veteran leader Mallikarjun Kharge in AICC president election. "All three of us resign from the post of official spokesperson to campaign for the election of Mallikarjun Kharge as party president and want this election to be free …