The first Delhi University Students Union election was held in 1954, but the first major controversy erupted in 1972-73 when students took to the streets.

Read about some of the major controversies and clashes that have defined DUSU elections over the years: https://www.hindustantimes.com/india-news/dusu-elections-over-the-years-from-a-50-day-strike-to-court-battles-over-violence-101789731410385.html