NEW DELHI, Jan. 14 -- Former Union minister Ramchandra Prasad Singh, better known as RCP Singh, may return to his old party - the Janata Dal (United) - with political circles in Bihar buzzing over the possibility of his comeback after the end of Kharmas on January 14, the inauspicious period in the Hindu calendar that traditionally puts major political decisions on hold. Senior JD(U) leaders said that Singh, currently associated with Prashant Kishor's Jan Suraaj, has conveyed his willingness to rejoin the party he helped build alongside chief minister Nitish Kumar. However, the final call, as always, rests with Nitish Kumar, who is said to be weighing both organisational needs and political optics before giving the green signal. Speculation gained fresh momentum on Sunday, when Nitish Kumar and RCP Singh attended a dahi-chura programme at Patel Bhawan in Patna, organised by leaders from the Kurmi community - from where both these leaders belong. A senior JD(U) leader, also a Kurmi, said that the gathering saw slogans calling for their reunion, underlining the community's push to bring the veteran strategist back. P3...