The long-awaited EVM Challenge to establish that the Electronic Voting Machines cannot be tampered will start from June 3, Chief Election Commissioner Nasim Zaidi announced on Saturday. But the Election Commission doesn't expect anyone to win the challenge. The poll body came up with the challenge so as to reassure political parties that raised doubts about the machines used to conduct every Lok Sabha and state elections held after 2002. But the Arvind Kejriwal's Aam Aadmi Party, which has been the loudest of the dozen-plus political parties that has campaigned against the machines, is unlikely to be impressed with the ground rules laid down by the election body.