PMK on Friday said it was easy to tamper electronic voting machine (EVM) and this would be proved on August 10 at Chennai before technical experts,political party leaders,retired judges,journalists and public. Talking to reporters here,PMK leader S Ramadoss said invitation to attend the programme was also sent to former Election Commissioner Krishnamurthy. He also justified the decision to boycott the Aaugust 18 Tamil Nadu assembly bypoll by AIADMK,MDMK and PMK.