New Delhi, Dec. 23 -- The appointment of 45-year-old Nitin Nabin as the working president of the Bharatiya Janata Party (BJP) has set off speculation that the organisational rejig that is expected early next year will also be carried out with the larger idea of implementing a generational shift in the party, people familiar with the thinking in the party said.

While Nabin, who is expected to be elected as the president, will be the youngest to take on the role, the BJP has been quietly picking relatively young people for leadership roles since 2014. A new team of office bearers, which includes vice presidents, national general secretaries, secretaries and spokespersons will be announced after the new president is formally appointed after...