Advani became a member of the Bharatiya Jana Sangh, also known simply as the Jana Sangh, a political party founded in 1951 by Syama Prasad Mookerjee in collaboration with the RSS. He was appointed as the secretary to S. S. Bhandari, then General Secretary of the Jana Sangh in Rajasthan. In 1957, he was moved to Delhi to look after the Parliamentary affairs.