an Indian politician, serving as the Member of Parliament, Rajya Sabha from Delhi, since 2018. He is the national spokesperson for the Aam Aadmi Party and the state-in-charge for Uttar Pradesh, Orissa and Rajasthan. Singh has been a senior leader of the party since its inception in November 2012, and is a member of the party's foremost decision-making body, the Political Affairs Committee (PAC). He joined hands with Delhi Chief Minister Arvind Kejriwal in his apolitical campaigns from the Right To Information campaign in 2006 to the 2011 Indian anti-corruption movement led by social activist Anna Hazare. He was elected to the Rajya Sabha on 8 January 2018 from the state of Delhi. He was in-charge of the party's affairs in the state of Punjab during the 2017 elections and a core member of the Delhi Election Campaign Group (DECG) which was formed during the Delhi assembly elections.