Senior Congress leader Kamal Nath, who has an over 50 year-association with the grand old party, may soon jump ship and join the BJP, along with his MP son Nakul Nath, according to media reports. While official confirmation is still pending, Kamal Nath’s exit will come as another setback for the Congress ahead of Lok Sabha elections – just six days ago, former CM Ashok Chavan quit Congress to join BJP.