Addressing AAP workers at his residence, Kejriwal raked up the issue of alleged manipulation of electronic voting machines to needle the BJP, saying that "EVM mischief" was behind the saffron party's recent upsurge.
Kejriwal said, by reposing faith on the AAP, voters of Bawana have sent out the message that BJP's politics of "breaking away MLAs from other parties using the lure of money" has come a cropper in Delhi.
Kejriwal's outburst comes after a prolonged period of uncharacteristic silence, following AAP's string of poll debacles which included the drubbings in Punjab, Goa, a Delhi bye-election and the municipal polls here.
"Try and conduct all polls using VVPAT-equipped EVMs if you (the BJP) have the guts. Then tally the votes polled with the paper trail at 5 or 15 per cent of the polling booths. You do mischief in EVMs then claim victory," he said.
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The voters, however, can see the voter-verifiable paper audit trail (VVPAT) slip for seven seconds.
VVPAT machines were used in the Bawana bypoll and also in the Rajouri Garden bypoll last May, when the BJP had emerged victorious.
The chief minister also warned the BJP-led Centre not to "disrupt" his government's work in the national capital by "throwing spanners", a complaint which the AAP chief has been making repeatedly since storming to power in 2015.