Sharma, considered close to Kejriwal, is credited with devising an effective media strategy for AAP after the party drew a blank in Delhi in the Lok Sabha polls.
He had worked with PTI, BBC and Hindustan Times and was also media adviser to Kejriwal during his 49-day stint as chief minister.
42-year-old Sharma led a team of spokespersons during the high-voltage campaign for the Delhi Assembly polls.
A senior party leader said Sharma always remained behind the scene while formulating AAP's responses to various critical issues as well as to allegations levelled by rival parties.
