The Constitution of India
§327 — Power of Parliament to make provision with respect to elections to Legislatures
Subject to the provisions of this Constitution, Parliament may from time to time by law make provision with respect to all matters relating to, or in connection with, elections to either House of Parliament or to the House or either House of the Legislature of a State including the preparation of electoral rolls, the delimitation of constituencies and all other matters necessary for securing the due constitution of such House or Houses.