New Delhi, March 22 -- Ten weeks ago, the momentum in India's polity seemed to be in favour of the Congress party. Fresh from its victories in three key Hindi heartland states in December 2018, India's principal opposition party seemed ready to put up a strong fight against the ruling Bharatiya Janata Party (BJP). But since then, the momentum seems to have shifted against the grand old party of Indian politics as its younger rival has managed to stitch up effective regional alliances to boost the prospects of a new National Democratic Alliance (NDA) alliance government in May 2019. A Mint analysis of the Lok Sabha (LS) numbers, taking into account the election results of state assemblies since May 2014 as well as factoring in erosion of vot...