 After the death of Deendayal Upadhyaya, the leadership of the Jana Sangh passed to Vajpayee.He became the national president of the Jana Sangh in 1968, running the party along with Nanaji Deshmukh, Balraj Madhok, and L. K. Advani.Vajpayee was arrested along with several other opposition leaders during the Internal Emergency imposed by Prime Minister Indira Gandhi in 1975.