Andhra Pradesh chief minister N Chandrababu Naidu, met chief election commissioner Sunil Arora to raise the issue of EVM malfunctioning, said 21 political parties have demanded verification of VVPAT paper trails of 50 per cent of the EVMs. Opposition parties on Sunday held a meeting to discuss the issue of EVM malfunctioning and said they will approach the Supreme Court again to demand that at least 50 per cent of paper trails be verified with EVMs. Relevantly Congress leader Abhishek Singhvi said opposition parties will approach the Supreme Court seeking a direction to the EC for counting of at least 50 per cent of the VVPAT slips with the EVMs in every assembly segment.