The Association for Democratic Reforms (ADR) and National Election Watch said the report was based on the analysis of self-sworn affidavits of all 57 MPs who were elected to Rajya Sabha this month.
Amid a blame game in the party's state unit, MLA from the Faridabad NIT assembly constituency Neeraj Sharma said the Congress should identify the 'black sheep' whose vote was cancelled.
Party MLA Shobha Rani violated the party whip by voting for Congress candidate Pramod Tiwari and was suspended and served a notice to reply within seven days.
Shiv Sena candidate Sanjay Pawar secured 33 votes while BJP’s nominee Dhananjay Mahadik got 25 votes but in the second round Mahadik completed the 41 votes quota while Pawar got a total of 39 votes.
Calling himself an associate member of the Nationalist Congress Party, Shinde said he had voted for MVA candidates as per the instructions of the party.
Cross voting in Rajya Sabha polls: Congress expels its Haryana MLA Kuldeep Bishnoi from all party positions
The Haryana Congress has alleged that Bishnoi, an MLA from the Adampur constituency in Hisar, did not vote for the party candidate Ajay Maken.
From among the 57 retiring members, the BJP had 25 of its members and the Congress had seven who will retire by next month and new ones will replace them.
Congress nominee Ajay Maken failed to secure Rajya Sabha berth after one of the party's MLAs, Bishnoi, cross-voted, while the vote of an MLA was declared invalid.
Congress's Haryana MLA and authorised polling agent BB Batra said while the vote of a party MLA was declared invalid, party MLA Kuldeep Bishnoi cross-voted for Sharma, a media baron.
Rajya Sabha polls: In prestige battle for sixth seat, Fadnavis's BJP outsmarts MVA with support of independents
Political analysts said that pulling off a win this way required a deep understanding of the arithmetic of counting of the electoral college and preferential voting pattern.
The BJP's better-than-expected show is a boost to the ruling National Democratic Alliance ahead of the President's poll, and is a blow to its rivals.
'Not only people, even MVA MLAs disappointed with Uddhav government': Fadnavis after BJP's win in Rajya Sabha polls
The bitter contest for the six seats of the Rajya Sabha that went to the wire saw three candidates of the BJP - Piyush Goyal, Anil Bonde and Mahadik - winning.
Rajya Sabha poll results: Raut calls BJP's win 'mandate of horsetrading', accuses EC of siding with that party
Raut said the vote of Shiv Sena MLA Suhas Kande was disqualified, whereas BJP's two votes were retained even as the same mistake was committed citing which the Sena's vote was invalidated.
'Fadnavis performed miracle of weaning away independent MLAs from rival camps': Pawar on Rajya Sabha poll results
He also said that there was nothing shocking in the election results, in which a Shiv Sena candidate lost.
A BJP delegation, including Union ministers Mukhtar Abbas Naqvi, Gajendra Singh Shekhawat, Jitendra Singh and Arjun Ram Meghwal, met the EC after the polling process was over.