The upcoming contest is the first in the last 25 years when the party presidency was held by either Sonia or Rahul.
At 91, Karan Singh is more pleased with Prime Minister Narendra Modi for declaring Singh's father Maharaja Hari Singh's birth anniversary as a state holiday.
Ghulam Nabi Azad's supporters, who also quit the Congress, are sure that he would launch a regional party in Jammu and Kashmir.
The BJP, which is strongly entrenched in power at the centre, has been relentlessly going after ruling regional parties in states like West Bengal, Delhi, and Telangana.
The simmering differences between Bihar Chief Minister Nitish Kumar and his larger ally, the BJP, has intensified with the exit of RCP Singh, who was till recently the Union Steel Minister.
Assam Chief Minister Himanta Biswas Sarma, who was a high-profile Congress defector to the BJP in 2015, attracts party leaders not only in north-eastern states but is a key person for the party high command.
For BJP presidents from AB Vajpayee to Amit Shah, Naidu was the man who knew the southern states thoroughly having visited districts and towns ever since the BJP was founded in 1980.
Running coalitions is a tough challenge, but the task becomes complicated if the chief minister is the leader of the minor group, and constantly looks up to the larger group.
The PM's suggestion was that photographs with identity details of permanent teachers posted to a government school be displayed in classrooms, so as to single out the proxies.
The feeling within the Congress is that the party was being treated as a poor cousin, even though it had heavyweights like former chief minister Ashok Chavan, and former PCC president Balasaheb Thorat as ministers.