New Delhi: Prime Minister Narendra Modi kick-started the Bharatiya Janata Party's campaign for the upcoming Delhi assembly polls at a mega rally at the Ram Leela Ground in New Delhi Saturday. PM Modi will be the face of BJP's campaign in the city and the party feels the rally will help it build a momentum for the election.The BJP has been out of power in Delhi for the past 16 years and its Delhi chief Satish Upadhyay said that the party is confident of winning the polls with a clear majority this time with the help of PM Modi's charisma.