Indian activist Partha Chaudhury is on a war footing as he strides out of the ruling BJP's regional headquarters in Kolkata armed with passion and pages of voter lists.
"We need to meet each and every BJP supporter, and all of this has to be done in less than 300 days," the 39-year-old tells a group of fellow activists advancing into the north of Kolkata, the teeming riverfront capital of West Bengal that's home to about 15 million people.
"We want people to remember that the BJP knocked on their doors much before any opposition party worker did."