Former union minister Kamal Nath will be the new Congress chief in Madhya Pradesh, replacing Arun Yadav.Congress president Rahul Gandhi also appointed party’s chief whip in the Lok Sabha Jyotiraditya Scindia as the head of the campaign committee.Four working presidents – Bala Bachchan, Ramnivas Rawat, Jitu Patwari and Surender Choudhary – have also been named to assist Nath. Gandhi also appointed Girish Chodankar as the party chief in Goa, replacing Shantaram Naik who had submitted his resignation from the post last month.