A study by non-profit organisation Janaagraha suggests there were discrepancies in Delhi's voter list, mainly because of intra-movement of people. The errors are more in case of the under privileged as deletions and omissions appear to be higher for lower SECs (socio-economic classification type) and lower castes. Since most of the errors in voter list appear to be spread evenly across the city, it is difficult for any political party to exploit it for undue gains.