The ECI introduced this new system of appointing BLOs creating a clear line of accountability for preparation of an error-free electoral roll, making the BLOs its custodian at the polling booth level. Previously, voter-identification slips used to be distributed by the contesting candidates of various political parties and that gave scope for complaints. The preparation of accurate electoral rolls and direct distribution of voter identification slip by the BLOs also boosted voter confidence in the credibility of the election process.