Congress's Rahul Gandhi's approval ratings shot up by 15 per cent after the Bharat Jodo Yatra, but Prime Minister Narendra Modi's popularity remains undented, a special NDTV survey in partnership with Lokniti-Centre for the Study of Developing Societies (CSDS) has found. The Prime Minister's oratory skills, developmental work and charisma impresses 40 per cent people, as his government completes nine years, found the survey of over 7,000 people across 19 states. Of them 25 per cent said they liked him for his oratory, 20 per cent said they like him for his developmental work, 13 per cent for his penchant for hard work and charisma. His policies have got the approval of 11 per cent people.