<P> The Supreme Court of India ruled in 1992 that reservations could not exceed 50 per cent, anything above which it judged would violate equal access as guaranteed by the Constitution . It thus put a cap on reservations . However, there are state laws that exceed this 50 per cent limit and these are under litigation in the Supreme Court . For example, in the State of Tamil Nadu the caste - based reservation stands at 69 per cent and applies to about 87 per cent of the population . </P> <Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (September 2016) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (September 2016) (Learn how and when to remove this template message) </Td> </Tr> <P> In parliament, caste and tribe based reservations are provided to make it more representative...Today, out of 543 seats in India's parliament, 84 (15.47%) are reserved for SC / Dalits and 47 (8.66%) for ST / Tribes . Allocation of seats for Scheduled Castes and Tribes in the Lok Sabha are made on the basis of proportion of Scheduled Castes and Tribes in the State concerned to that of the total population . </P>

Why the system of reserved constituencies is adopted in india