A dinner was hosted on Saturday at Zardari House, Islamabad, in honor of PPP senators and party leaders, where party chairman Bilawal Bhutto-Zardari expressed full confidence that all opposition lawmakers voted for Yousuf Raza Gillani in the Senate chairman election.

Bilawal said that a wrong impression was being given that some opposition senators had deliberately stamped the ballot paper in the wrong manner. "No senator had affixed their seal wrongly," he added.

The PPP chairman said he has full confidence in all the senators of the opposition.

"The Senate secretary has directed lawmakers to put a seal anywhere in the box of the candidate of their choice," said Bilawal.

He said, all the senators of the opposition voted for Yousuf Raza Gillani.

Bilawal said that all the Opposition parties stand firm under the Pakistan Democratic Movement's (PDM) platform.

Bilawal said the Opposition would soon challenge the decision of the presiding officer who rejected seven votes cast in favor of Gillani — in the High Court and hoped that justice would be served.

PPP leaders said it was necessary not to move from the parliament for "continued success."