The Lokpal and Lokayuktas Bill, 2011 was passed by Lok Sabha yesterday. The Bill will be discussed next by Rajya Sabha. Unlike the Lok Sabha, where the UPA government holds a majority in the House, the composition is different in Rajya Sabha. As on 28th December 2011, the total strength of Rajya Sabha is 243 members . The UPA has a combined strength of 95 members in the House, well below the 50% mark.  (Of course, there will be some absent members which will change the arithmetic a bit.)  The passage of the Bill thus depends on the stand taken by other political parties and their numbers in the House. Here's how the figures stack up:

Party Numbers
Indian National Congress (INC) 71
Dravida Munnetra Kazhagam (DMK) 7
Nationalist Congress Party (NCP) 7
All India Trinamool Congress (AITC) 6
Jammu and Kashmir National Conference 2
Sikkim Democratic Front (SDF) 1
Rashtriya Lok Dal (RLD) 1
Total UPA 95
   
Bharatiya Janata Party (BJP) 51
Janata Dal (United) 8
Shiv Sena (SS) 4
Shiromani Akali Dal (SAD) 3
Total NDA 66
   
Communist Party of India (Marxist) 13
Communist Party of India (CPI) 5
All India Forward Bloc (AIFB) 1
Total Left 19
   
Bahujan Samaj Party (BSP ) 18
Biju Janata Dal (BJD ) 6
All India Anna Dravida Munnetra Kazagham (AIADMK ) 5
Samajwadi Party (SP ) 5
Rashtriya Janata Dal (RJD ) 4
   
Asom Gana Parishad (AGP ) 2
Bodoland People's Front (BPF ) 1
Indian National Lok Dal (INLD ) 1
Lok Janasakti Party (LJP ) 1
Mizo National Front (MNF ) 1
Nagaland People's Front (NPF ) 1
Telugu Desam Party (TDP ) 4
   
Nominated 8
Independent and others 6
   
Total 243

The convention for passing Bills in the Parliament is by orally communicating agreement or disagreement with the proposed motion (whether a Bill should be passed or not, for example). When a motion is put to vote the speaker says, 'Those in the favour of the motion say Aye and those opposing it say No.' According to the voice vote, the Speaker decides whether the Bill is accepted or negated by the House. If a member is not happy with a voice vote, it can be challenged and a division can be asked for. The procedure for division entails the Speaker to announce for the lobbies of Parliament to be cleared. Then the division bell rings continuously for three and a half minutes and so do many connected bells all through Parliament House and Parliament House Annexe. MPs come from all sides into the chamber and the doors are closed. The votes are recorded by the Automatic Vote Recording Equipment. For example, in the Winter Session of the Parliament, four appropriation bills (financial Bills) were passed by voice vote amidst the interruptions from the opposition and two bills i.e. The Orissa (Alteration of Name) Bill, 2010 and The Constitution (One Hundred and Thirteenth Amendment) Bill, 2010 (Amendment of Eighth Schedule) were passed through division. For these Bills the voting took place together. The votes recorded were: 298 ayes and 0 noes.