Article 82 of Constitution of India "Readjustment after each census"
Upon the completion of each census, the allocation of
seats in the House of the People to the States and the
division of each State into territorial constituencies shall
be readjusted by such authority and in such manner as
Parliament may by law determine:
Provided that such readjustment shall not affect
representation in the House of the People until the
dissolution of the then existing House: Provided further
that such readjustment shall take effect from such date as
President may, by order, specify and until such readjustment
takes effect, any election to the House may be held on the
basis of the territorial constituencies existing before such
readjustment:
Provided also that until the relevant figures for the first census taken after the year 2000 have been published, it shall not be necessary to readjust the allocation of seats in the House of the People to the States and the division of each State into territorial constituencies under this Article.
Article 83 of Constitution of India "Duration of Houses of Parliament"
(1) The council of States shall not be subject to
dissolution, but as nearly as possible one-third of the
members thereof shall retire as soon as may be on the
expiration of every second year in accordance with the
provisions made in that behalf by Parliament by law.
(2) The House of the People, unless sooner dissolved, shall
continue for five years from the date appointed for its
first meeting and no longer and the expiration of the said
period of five years shall operate as a dissolution of the
House: Provided that the said period may, while a
Proclamation of Emergency is in operation, be extended by
Parliament by law for a period not exceeding one year as a
time and not extending in any case beyond a period of six
months after s the Proclamation has ceased to operate.