Prime Minister Narendra Modi campaigned for his party today in Lucknow with a huge rally at a public park named after the wife of Dalit icon Bhim Rao Ambedkar. The ground was built by Bahujan Samaj Party chief Mayawati when she was Chief Minister; her party says she alone has the drawing power to fill it. "I have never seen such a big audience," said the Prime Minister to a sea of supporters that roared their approval. Watch more videos: http://www.ndtv.com/video?yt Download the NDTV news app: https://play.google.com/store/apps/details?id=com.july.ndtv&utm_source=Youtube&utm_medium=embed&utm_campaign=Inhouse_App_Install