Articles 239 to 241 in Part VIII of the Constitution deal with the union territories. Even though all the union territories belong to one category, there is no uniformity in their administrative system.
Every union territory is administered by the President acting through an administrator appointed by him. An administrator of a union territory is an agent of the President and not head of state like a governor. The President can specify the designation of an administrator; it may be Lieutenant Governor or Chief Commissioner or Administrator. At present, it is Lieutenant Governor in the case of Delhi, Puducherry and Andaman and Nicobar Islands and Administrator in the case of Chandigarh, Dadra and Nagar Haveli, Daman and Diu and Lakshadweep. The President can also appoint the governor of a state as the administrator of an adjoining union territory. In that capacity, the governor is to act independently of his council of ministers.
The Union Territories of Puducherry (in 1963) and Delhi (in 1992) are provided with a legislative assembly4 and a council of ministers headed by a chief minister. The remaining five union territories do not have such popular political institutions. But, the establishment of such institutions in the union territories does not diminish the supreme control of the president and Parliament over them.
The Parliament can make laws on any subject of the three lists (including the State List) for the union territories. This power of Parliament also extends to Puducherry and Delhi, which have their own local legislatures. This means that, the legislative power of Parliament for the union territories on subjects of the State List remain unaffected even after establishing a local legislature for them. But, the legislative assembly of Puducherry can also make laws on any subject of the State List and the Concurrent List. Similarly, the legislative assembly of Delhi can make laws on any subject of the State List (except public order, police and land) and the Concurrent List.