"This whole exercise is a 'nautanki' (drama). Even though Congress has agreed to support Aam Admi Party unconditionally, Kejriwal is not ready to form government in Delhi," party president Uddhav Thackeray said in an editorial in mouthpiece 'Saamna'.
AAP, which emerged as the second largest party winning 28 seats in its debut elections in Delhi, has sought views of people whether to form a minority government with the outside support of Congress.
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Earlier, it had sent a charter of 18 demands to Congress and BJP seeking their views on points that are presumed to be against the interest of both the national parties.
Congress in its reply made it clear that chunk of the issues mentioned by AAP can be addressed by government and do not need House, virtually sealing a small window available for Kejriwal to evade power in the wake of fractured mandate.
"Kejriwal is saying AAP will decide whether to form government after eliciting views of people... This whole exercise is childish," Uddhav said. "This is a clever strategy by Kejriwal and company to escape from the situation."
Uddhav said Kejriwal and his team had embarked on to bring revolution in the country. "But it seems the spark of their movement has died down in Delhi itself."
Uddhav also asked AAP, which won the polls on anti-corruption plank, to stop "advising" political parties.
The Shiv Sena president had earlier this month praised AAP for their spectacular performance.