Delhi University Chief Election Officer Ashok Vohra said the voting went off peacefully with 39.55 per cent of students casting their vote in the morning leg of polls.
"The elections in the morning from 8.30 AM to 12.30 PM went off smoothly. There was a minor glitch in one EVM machine at Khalsa College but it was immediately corrected," he said.
The voting percentage for evening college students, which took place from 3 PM to 7 PM in the second leg, was expected to be declared late in the night.
Twelve candidates, each for the posts of president and vice president; 17 for the post of secretary, and 10 for joint secretary are in the fray for the four major posts of DUSU.
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Congress-backed National Students' Union of India (NSUI) and BJP-affiliated Akhil Bharatiya Vidyarthi Parishad (ABVP) are the main student outfits in fray, while left oriented All India Students Association (AISA) too has fielded some candidates to grab a place in the student's body.
Meanwhile in JNU, an estimated 56 per cent turnout was recorded at the university's student union elections, which is a five per cent drop from last year.
The polls were to begin at 9 AM but started only after 9.30 AM, Gyan Prakash said.
In view of the delay, the election commission officers extended the closing time by half an hour till 6 PM.
Polling passed off peacefully as internal security guards kept a tight vigil following the university's tradition of non-involvement of police forces.
There are eight candidates fighting for the post of president, five for vice-president, six for general secretary and three for joint secretary in JNUSU.
Merit-cum-Means Scholarship (MCM) was the common agenda for all the contesting students union.
Polling in JNU was conducted with the help of traditional ballot papers and the results are expected to be declared by Monday.