NEW DELHI: The BJP ’s big win in Assam will not immediately benefit the party in increasing its tally in the Rajya Sabha as there will not be any vacancy in the Upper House from the state until June, 2019. But, the AIADMK with its impressive show in Tamil Nadu would be able to increase its number by gaining one additional seat in the council of states after its biennial election next month.Similarly, the assembly election results of West Bengal, Kerala and Puducherry will not impact the position of any political party in the Rajya Sabha in near future as there will not be any vacancy in the Upper House from these three states this year.West Bengal will report six vacancies in August next year while Kerala will report three vacancies in July, 2018. Puducherry's lone Rajya Sabha seat will be vacant in October, 2021.However, the NDA will for the first time cross the overall tally of the UPA with the BJP and its ally TDP together possibly getting seven additional seats in the June 11 biennial election.Election to total 57 vacant Rajya Sabha seats from different states including Tamil Nadu, Maharashtra, Haryana, Madhya Pradesh,Chhattisgarh, Bihar, Andhra Pradesh, Telangana and Uttar Pradesh will be held next month. Most of these seats in the Upper House will be vacant during June-August.It is expected that the BJP will win four additional Rajya Sabha seats while the TDP may win three others in the biennial election. As against its 14 retiring members from different states, the BJP may get 18 seats — a net gain of four seats in the biennial election.Six of these 57 seats will be vacant from Tamil Nadu due to retirement of members after the completion of their six-year term. Three of them are from the AIADMK, two from the DMK and one from the Congress. It is expected that the ruling AIADMK will four seats — gain of an additional one seat — backed by its strength in the state Assembly while the DMK would be able to retain the remaining two.Overall the Congress (60 MPs) will continue to be the largest party in the Rajya Sabha, but the tally of the UPA (70 MPs) will for the first time be lower than that of the NDA (76 MPs) after the biennial polls to fill 57 seats in the Upper House next month.Though the NDA will still have to depend on the "non-NDA and non-UPA" members to get crucial bills passed in the Upper House, the increased number will certainly give the ruling alliance a much needed breathing space in terms of exploring options of getting support of other parties.Main parties among this "non-NDA and non-UPA" group are Samajwadi Party, AIADMK, Bahujan Samaj Party, Trinamool Congress and the BJD. These parties may together tilt the balance in favour of the NDA either by voting with it or just by abstaining to bring down the half-way mark.The NDA will also have an advantage of nominated members. The President, on recommendation of the government, had nominated six members to the Upper House last month while the one seat still remains vacant. If the government takes a call on the vacant seat, it will have an advantage of total seven votes.Two of the six nominated members have already decided to accept the whip of the ruling BJP and informed the Rajya Sabha secretariat for the same.Though the nominated members are not bound by whip of the ruling party and therefore they are free to side with either the government or opposition during any crucial vote or remain neutral, generally the nominated members vote alongside the ruling party.