Guntur, June 9 (ANI): BJP president and Union Home Minister Rajnath Singh on Sunday promised all cooperation and help to the regional Telugu Desham party (TDP) chief, N Chandrababu Naidu, who was sworn-in as the new chief minister of Andhra Pradesh. In a sprawling ceremony, Naidu took oath as the first chief Minister of the remaining part of the recently bifurcated Andhra Pradesh out of which the new state of Telangana had emerged