He lauded the strategy of JDU-RJD-Congress alliance as "undoubtedly better".
The Bhojpuri singer-turned-politician said the party failed to convince the people to vote for BJP candidates in the keenly-fought Bihar elections.
"We failed to make people realise to vote for the party at the Centre and earn maximum benefits. We clearly failed to convine our party agenda to the people of Bihar," said Tewari, who represents North East Delhi in Lok Sabha.
"Undoubtedly the strategy of grand alliance (of JDU-RJD-Congress) had been proved better than ours. We could have campaigned in a more strategical way to reach out larger masses," he added.
Ever since the BJP faced drubbing in the Bihar Assembly elections whose results were declared on November 8, several leaders have spoken out against the strategy, including the way the campaign was conducted.
The critics include party veterans L K Advani, M M Joshi and
Others who have spoken out include Bihar MPs