The AAP's attempt to whip up the issue comes at a time the party is in the eye of a political firestorm over its sacked minister Kapil Mishra's allegations of corruption against Kejriwal and minister Satyendar Jain.
On his part, Mishra, who was suspended from AAP's primary membership yesterday, mocked it saying the party should stop living in "denial" and accept the fact that people do not vote for Kejriwal anymore.
He demonstrated how it can be done using, what party sources said was, a "prototype EVM" developed by a "a group of IITians".
The Election Commission, which maintains that EVMs cannot be programmed to favour any party, did not officially react. However, sources said the machine "did not" seem to be among the ones that are used during elections.
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"It was a drama enacted by the AAP to divert attention of the public from the allegations of bribery and forgery in funding," Delhi BJP chief Manoj Tiwari said.
Before Bhardwaj's demonstration, Kejriwal tweeted, "Saurabh Bhardwaj will reveal the truth behind a big conspiracy in the country. Satyameva Jayate".
Bhardwaj, who represents the Greater Kailash constituency, claimed that in his capacity as an engineer, he had extensively worked in this area and was aware of how the machines can be fiddled with.
After entering a "secret code", Bhardwaj pressed 10 votes for the AAP in the machine used for the purpose of demonstration. Later, in the display panel, it turned out that the votes went to the BJP.
"EVM manipulation is a very serious issue. It is a danger to the democracy of the country. There is no machine in the world which cannot be hacked," the AAP MLA claimed.
Kejriwal has repeatedly claimed that the AAP's poll debacles have something to do with tampering of EVMs. The issue threatened to split the party with a section refusing to toe the line taken by him.