The BJP at the same time made it clear that the party would seek fresh elections in Delhi and was ready for it rather than form an alternative government since it did not have the required numbers in the state Assembly.
Kejriwal's estranged mentor Anna Hazare said it was unfortunate that Jan Lokpal Bill could not be passed and that he had to resign.
Kejriwal was never serious to govern and his resignation was well-anticipated, party spokesperson Sandip Dikshit told PTI.
"He was never serious to govern and the exit of his government marks the end of a big drama. He will find any excuse to run away, to act like a martyr," Dikshit said.
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DPCC Chief Arvinder Singh Lovely said Kejriwal's resignation was totally scripted and a pre-planned drama.
Both Singh and AICC communication department chairman Ajay Maken said Congress had made it clear that it was in favour of Jan Lokpal bill, but the way it was being tabled was totally unconstitutional.
With Kejriwal recommending fresh elections to Lt Governor Najeeb Jung, BJP leader and Leader of Opposition in the Assembly Harsh Vardhan said the party would seek fresh elections rather than form an alternate government.
"I have said this on December 8 (after the Delhi assembly election results) that we do not have numbers. We are even ready if election is held next week," he said.
BJP spokesperson Sudhanshu Trivedi accused Kejriwal of forming a government in Delhi by "deceit" without a mandate of the poeple and resigning to cover up his failure to deliver on his commitments.