கொல்கத்தாவில் கூடும் எதிர்க்கட்சிகளின் மாபெரும் கூட்டம்- வீடியோ

West Bengal Chief Minister Mamata Banerjee Thursday said the mega opposition rally being hosted by her Trinamool Congress here on January 19 would sound the "death knell" for the BJP in the Lok Sabha polls and regional parties would be the deciding factor.