Mumbai, Feb. 13 -- With seven Rajya Sabha (RS) MPs elected from the Maharashtra Legislative Assembly retiring in April, there is likely to be a tug of war between the three allies of the Maharashtra Vikas Agadhi (MVA) to win an additional seat in the Upper House. The MVA allies - the Shiv Sena, the Congress and the Nationalist Congress Party (NCP) - plan to nominate RS members on the basis of their total strength in the Assembly....