The Commission has a separate Secretariat at New Delhi, consisting of about 300 officials, in a hierarchical set up. Two or three Deputy Election Commissioners who are the senior most officers in the Secretariat assist the Commission. They are generally appointed from the national civil service of the country and are selected and appointed by the Commission with tenure. Directors, Principal Secretaries, and Secretaries, Under Secretaries and Deputy Directors support the Deputy Election Commissioners in turn. There is functional and territorial distribution of work in the Commission. The work is organised in Divisions, Branches and sections; each of the last mentioned units is in charge of a Section Officer. The main functional divisions are Planning, Judicial, Administration, Information Systems, Media and Secretariat Co-ordination. The territorial work is distributed among separate units responsible for different Zones into which the 35 constituent States and Union Territories of the country are grouped for convenience of management.
At the state level, the election work is supervised, subject to overall superintendence, direction and control of the Commission, by the Chief Electoral Officer of the State, who is appointed by the Commission from amongst senior civil servants proposed by the concerned state government. He is, in most of the States, a full time officer and has a small team of supporting staff. At the district and constituency levels, the District Election Officers, Electoral Registration Officers and Returning Officers, who are assisted by a large number of junior functionaries, perform election work. They all perform their functions relating to elections in addition to their other responsibilities. During election time, however, they are available to the Commission, more or less, on a full time basis.
The gigantic task force for conducting a countrywide general election consists of nearly five million polling personnel and civil police forces. This huge election machinery is deemed to be on deputation to the Election Commission and is subject to its control, superintendence and discipline during the election period, extending over a period of one and half to two months.