Pradeep Kumar Balmuchu,Jharkhand Pradesh Congress Committee president and one of the five candidates for the March 30 Rajya Sabha polls that were countermanded by the Election Commission,filed a petition on Tuesday seeking to declare the ECs decision unconstitutional. A Bench comprising Justices Prakash Tatia and A P Singh reserved its decision,according to the states senior standing counsel S K Verma. Apart from Balmuchu,Jharkhand resident Jai Shankar Pathak has also filed a PIL challenging the EC decision.