Atal Bihari Vajpayee was an Indian politician who served three terms as the prime minister of India, first for a term of 13 days in 1996, then for a period of 13 months from 1998 to 1999, followed by a full term from 1999 to 2004. Vajpayee was one of the co-founders and a senior leader of the Bharatiya Janata Party.