An editorial in party mouthpiece 'Saamana' also said that Janata Dal (United) leader Nitish Kumar's remarkable performance was due to several factors, the key being his "clean" campaign and honest image.
"Those who had taken the Delhi Assembly election lightly will have to take the Bihar results seriously because this was a direct fight between Nitish Kumar and Narendra Modi. Even after using political might, money and various announcements, the BJP could not even win 60 seats while its allies have been buried 20 feet underground," said Sena, which partners the BJP - led governments at the Centre and in Maharashtra.
It said that one of the reasons behind the Grand Alliance's win was that Mr Kumar did not lie and worked after taking the people into confidence.
"He did not make false promises, stopped hooliganism and brought law and order. He did not show off money and power. He went ahead with simplicity and during the course of campaigning, did not use uncivilised language. All this led to his victory," Sena said.
"One can win an election using power and money only once, like you can make a fool out of a person only once... We do not know if crackers have been burst in Pakistan after Nitish Kumar's victory, but, in Bihar, crackers are certainly being burst," it added in a sharp rebuke of BJP.
BJP chief Amit Shah had said on the campaign trail in Bihar that "if by mistake BJP loses the polls, crackers will go off in Pakistan".
In a spectacular comeback for Janata Dal (United), Rashtriya Janata Dal and Congress, the constituents of the grand alliance secured 178 seats in the 243-member Bihar assembly.
The BJP-led National Democratic Alliance, for which PM Modi had mounted an aggressive campaign, addressing more than 30 rallies in the poll-bound state, only bagged 58 seats. BJP on its own could win 53 out of the 157 seats it contested.
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