Guwahati: Congress President Mallikarjun Kharge on Sunday led a high-voltage campaign in Assam’s Naoboicha Assembly constituency, unveiling a five-point “guarantee” plank while mounting a sharp attack on the BJP-led government in the state and at the Centre. Kharge was joined by former Chhattisgarh Chief Minister Bhupesh Baghel, senior Jharkhand leader Bandhu Tirkey, APCC president Gaurav.