SIR in Bengal: How to contact if BLO has returned from your home?
Open website of Chief Electoral Officer of West Bengal's office. Click on ELECTORS option. Then click on Find Your Name on the Electoral Roll option. A page called voters’ service portal will open. There, enter information related to the state, language along with the EPIC number. Click on the VIEW DETAILS option. The numbers of BLO, DEO, ERO will appear.