India, Feb. 8 -- Bharatiya Janata Party (BJP) leaders credited the party's stunning win in Delhi, ending a 27-year-old run of humiliating defeats -- especially because the party was in power at the Centre for 16 of those years -- to astute booth level management; an extensive on-ground campaign; and a sharp narrative targeting Aam Aadmi Party (AAP) leader and former chief minister Arvind Kejriwal.

The party has won or is leading on 48 of the Delhi assembly's 70 seats to the AAP's 22. The Congress failed to win a single seat, continuing a trend that started in 2015.

Senior BJP leaders also credited the extensive campaign by the cadre of the party's ideological fount, the Rashtriya Swayamsevak Sangh (RSS) .

It was Kejriwal's loss, they e...