With Rajya Sabha Chairman C P Radhakrishnan accepting the merger of two-thirds of Aam Aadmi Party strength in the Rajya Sabha with the BJP on Monday, the AAP said it will mount a legal battle if needed.AAP Rajya Sabha leader Sanjay Singh, in his first reaction after the formalisation of the merger, said the House Chairman had acted after taking cognisance of a letter signed by seven AAP MPs.Related news: AAP loses strength in Rajya Sabha after chairman accepts merger of 7 MPs with BJP“Our letter demanding disqualification of MPs has not even been considered by the Chairman. We are hopeful he will deliver justice once he considers that letter,” Singh said.“The Chairman has taken cognisance of the letter submitted by those seven MPs, and based on that, he has accepted their merger. The objection raised by us and the disqualification we demand based on the Tenth schedule of the Constitution, has not even been considered. I am hopeful that when our letter will be considered, the Chairman will rule in favour of the Constitution and democracy and disqualify the membership of these 7 MPs,” he said.He said if the decision of the Rajya Sabha Chairman is still adverse, AAP will approach the court.Senior Supreme Court lawyer Kapil Sibal is guiding AAP in the matter. He had earlier said such petitions take years to settle and by then further political damage cannot ruled out.“These matters can take up to five years. By then who knows what May happen. A split in Punjab AAP may also be possible,” Sibal said.Sibal added that the constitutional provision is for the political party to merge with another and then its legislature party to merge with the new party.“Here the reverse is happening. Parties haven’t merged but legislature party in Rajya Sabha has. This can’t be. This is against the Constitution’s Tenth Schedule and anti-defection law. But the problem is this is not about law, this is about politics,” Sibal said.