The Electronic Voting Machine process, despite the plethora of grievances about its functioning from the Opposition parties, is a major improvement over paper-based voting. VVPATs are now deployed in all Assembly and parliamentary elections with EVMs. The Opposition’s demand for a count of 50% of the VVPAT slips, as opposed to the current system of counting VVPAT slips in one randomly selected booth of each constituency, is aimed at ensuring that EVMs have not been tampered with. The other issue with the VVPAT is more significant: machine glitches. Glitches in the VVPAT machines were largely due to spooling issues in the print unit, which was sensitive to extreme weather.

Source: The Hindu February 06, 2019 18:22 UTC