The Comptroller and Auditor General (CAG) is an important constitutional post in India and plays a significant role in the Indian political system. Some key functions and powers of the CAG are as follows:

• The CAG is responsible for auditing all the expenditure and revenue of the Union and States Governments, as well as local bodies and other institutions that are funded by the government.
• The CAG is an independent authority and acts as the guardian of public funds and ensures that there is no wasteful or unauthorized expenditure of public money.
• The CAG submits audit reports to the President of India or Governors of States, who then send them to the Parliament or State Assembly, respectively. These reports draw attention to any discrepancies and irregularities in the government’s finances and bring accountability to the system.
• The CAG can also undertake special audits and investigations based on specific requests or suo moto actions, if there is any suspicion of wrongdoing or malfeasance.
• The CAG has the power to conduct performance audits, assess the efficiency and effectiveness of government programs, and provide recommendations for improvement.
• The CAG is also mandated to scrutinize government contracts and agreements, and ensure that they are fair and transparent.

Overall, the CAG plays a critical role in promoting transparency, accountability, and good governance in the Indian political system.