The Election Commission has invited all the seven national and 49 state parties to participate in the challenge to prove that its EVMs can be tampered with.
Earlier, the commission had said that it would invite all the national and state recognised parties which had contested the recent assembly polls. Some of these parties had alleged that the EVMs were tampered with.
Now, the poll panel has sent letters to all the seven national parties – the BJP, the BSP, the Congress, the CPI, the CPI-M, the NCP and the TMC – and 49 state parties, including the AAP.

The Commission said, each party will get four EVMs of their choice from the five states and four hours to hack. It said, each team can have a maximum of three persons, but foreign experts have been barred from participating. The challenge begins on June 3.