The Election Commission told the Supreme Court on Friday that counting VVPAT slips of 50 per cent EVMs, as demanded by 21 non-NDA political parties, could delay declaration of results of the general elections by six days with no gain to the existing 99.99 per cent voter confidence in the voting machines.

from Times of India https://timesofindia.indiatimes.com/india/counting-50-of-paper-trail-will-delay-results-by-5-days-ec/articleshow/68638915.cms