Cracking the whip over alleged ‘fixing’ of a 2014 Assembly bypoll to ensure BJP’s win, Congress on Wednesday expelled former Chhattisgarh Chief Minister Ajit Jogi’s son Amit Jogi from the party for six years and dared Prime Minister Narendra Modi to sack Chief Minister Raman Singh on the same issue. Congress alleged “Chattisgarh issue revolves around monetary allurement offered by BJP’s Chief Minister Raman Singh to Congress candidate for withdrawing from his candidature” and added “Modiji’s solemn promise to people was ‘zero tolerance for corruption’ and ‘Na Khaoonga Na Khane Doonga’.