The Bharatiya Janata Party (BJP) launched the election manifesto 'Lokkho Sonar Bangla crowdsourcing campaign' in West Bengal today, ahead of the assembly poll. Here, JP Nadda visited at the residence of Bankim Chandra Chattopadhyay, the composer of Vande Mataram. JP Nadda paid tribute to Bankim Chandra Chattopadhyay. Watch the video for more information.