As India heads to the polls starting next month, workers hunched over boxes at a factory in the southern city of Mysuru race to finish producing millions of bottles of indelible ink for the world's largest election.<br /><br />For decades, India has used the ink, made primarily from silver nitrate, to mark voters after they have cast their ballot to prevent duplicate votes and fraud.<br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline
