Kamal Nath, India's commerce and industry minister, is a member of the ruling Congress party. He talks about the elections and how the credit crunch is affecting India.
Arun Shourie is on the executive committee of the opposition BJP. He tells Sir David what would change if his party was in power.
Prakash Karat is the leader of the Communist Party of India (Marxist). He joins Sir David to talk about his party's plan for the current elections and the history of communism in India.Shobhana Bhartia, the owner of the Hindustan Times media group, talks about the role of the media in this election.
Amitabh Bachchan is perhaps the biggest star in the history of Indian cinema. A BBC poll ranked him above Laurence Olivier and Robert De Niro as the greatest actor of the millennium.Sir David joins him to talk about Indian cinema and how hosting Who Wants to be a Millionaire? revived his once-flagging career.
Pranab Mukherjee is India's minister for external affairs. He leads his country's foreign policy at a critical time: India is emerging as a force to be reckoned with on the world stage but is surrounded by increasingly unstable neighbours. He talks to Sir David about his country's relationship with the rest of the world.