A blame game has started within the Congress party a day after it was decimated in the Delhi Assembly polls. After senior Congress leader P Chidambaram lauded the Aam Aadmi Party for its win, the party's Delhi unit leader, Sharmistha Mukherjee, tweeted: "With due respect, Sir, just want to know, has the Congress outsourced the task of defeating BJP to state parties? If not, then why are we gloating over AAP victory rather than being concerned about our drubbing? And if 'yes', then we (Pradesh Congress Committees) might as well close shop!" Delhi Congress in-charge PC Chacko quit his post,