West Bengal Chief Minister and TMC supremo Mamata Banerjee will not be attending the swearing-in ceremony of Congress leader Siddaramaiah as the Karnataka CM. Banerjee had received an invitation from Congress president Mallikarjun Kharge to participate in the event on May 20 in Bengaluru, but she has designated party leader Kakoli Ghosh Dastidar for the programme. Banerjee's presence at the swearing-in programme is considered crucial for opposition unity