Updated info on Presidential Elections 2007

The Election Commission of India will hold indirect 12th presidential elections of India on 18 July 2007.
The President of India is elected indirectly by the members of Indian Parliament and Legislative Assemblies of individual States. Although the election involves actual voting by MPs and MLAs, they tend to vote for the candidate supported by their respective parties.[1]
Hence the internal process for the election involves lobbying by parties for their respective candidates. UPA, the ruling coalition and NDA, the major opposition coalition hence hold the key to the nomination and support gathering. Another key player in the final decision could be the Left parties, which are offering external support to the government. The Left has agreed to support the UPA candidate under certain conditions for nomination[2]. Mayawati, the newly elected chief minister of Uttar Pradesh, the most populous state of India, is also said to be a significant factor in the final election.[3]
Probable candidates
Dr A.P.J Abdul Kalam (Hon President of India)
Mr Bhairon Singh Shekhawat (Hon. Vice-President of India)
Mr Vasant Sathe (Former Union cabinet minister)
Mr Sushil Kumar Shinde (Union power minister and prominent Dalit leader)
Mr Pranab Mukherjee (Union external affairs minister)
Dr Karan Singh (Diplomat and son of former king of J&K, Maharaja Hari Singh)
Mr Somnath Chatterjee (Speaker of Lok Sabha)
Dr.Manmohan Singh (Prime Minister of India)
Mr C.Rangarajan (Former Reserve Bank Governor and Current Economic Advisor to Prime Minister)
Mr Jaswant Singh (Former external affairs minister)
Mr Shivraj Patil (Union Home minister)
Mr N.R. Narayana Murthy (IT major Infosys founder)
Mr Rahul Bajaj (Prominent Industrialist, Rajya Sabha MP)
Dr Raghunath Mashelar (Prominent scientist, scientific advisor to the PM and former chief of the CSIR)
Mr H. D. Deve Gowda (Former Prime minister of India)
Mr Atal Behari Vajpayee (Former Prime minister of India)
Mr I.K. Gujral (Former Prime minister of India)
Mr V. P. Singh (Former Prime minister of India)
Mr N.D.Tiwari (Former Chief minister of Uttaranchal)
Dr Mrs Najma Heptullah (Former Rajya Sabha deputy speaker)
Mr A. M. Ahmadi (Former Chief Justice of India)
Mr V.N Khare (Former Chief Justice of India)
I lifted all this info from Wikipedia….. Shruti