National Democratic Alliance

Centre-right alliance of political parties.

Formed in 1998.

Led by Bharatiya Janata Party.

Number of constituent parties has changed many times as some new parties join the alliance or the older allies leave.

From 1998 to 2004 it was the ruling alliance at the Centre.  After a gap of 10 years or two terms of Loksabha in May 2014 the alliance regained power.