Come February, BJP will roll out high-voltage "Parivartan Yatras" across Bengal to reel in the votes in the coming state election. But for the last two months, the Mamata Banerjee government has also deployed its own juggernaut - "Duare Sarkar", an initiative that takes a dozen government services to your doorstep. Since its launch less than two months ago, it has touched two and half crore lives. A game changer, says Trinamool. A poll gimmick, says opposition.