New Delhi: The RSS's Akhil Bharatiya Vidyarthi Parishad won three of the four main posts in the Delhi University Students' Union, after a day of high drama at the fortress-like counting centre.

The Congress's National Students Union of India (NSUI) won only the secretary's post.

Counting of votes for the DUSU polls was stalled at least twice because of glitches in electronic voting machines, and was then suspended for more than four hours after student activists got involved in scuffles over the malfunction.

Delhi's ruling Aam Aadmi Party, whose student wing Chhatra Yuva Sangharsh Samiti (CYSS) is in alliance with the CPIML-Liberation's All India Students Association (AISA), renewed its attack on EVMs after the disruptions. The AISA-CYSS came third in elections to all posts.

Around 44.5 per cent of DU's 1.4 lakh-odd voters cast their ballots on Wednesday, the highest turnout in more than a decade.

The ABVP's Ankiv Basoya recaptured the president's post, which the outfit had lost to the NSUI after a reign of four years, by more than 1,700 votes. The NSUI had won the vice-president's post too last year. The outfit's Akash Choudhary was elected secretary this year.

After counting began at 9.30am, it was stalled at least twice because of glitches in the display of five EVMs.

Soon, a scuffle broke out and sounds of glasses being broken were heard inside the counting hall - a police community centre in north Delhi's Kingsway Camp police lines.

The police escorted the DUSU president, Rocky Tuseed of the NSUI, and the ABVP's secretary candidate, Sudhir Dedha, away from the counting hall.

After 2pm, election officials announced that counting had been suspended and would continue on a later date. Around a third of the votes had been counted till then.

The DUSU was the first students' union to introduce EVMs, back in 2006.

Tuseed demanded a recounting, while the ABVP and AISA candidates sought that the counting continue.

The counting resumed around 6pm after all candidates agreed to the process continuing. The faulty EVM with 426 votes was sealed and kept for repair.

The NSUI termed the malfunctions "a culmination of highly biased and partisan behaviour on the part of the DU administration at the behest of the ABVP/BJP".

The group had earlier demanded the expulsion of the ABVP's vice-presidential candidate, Shakti Singh, whose supporters went on a rampage at Zakir Husain Delhi College earlier this week. The NSUI has also called for several steps for transparency.

Singh, who credited his win to students from Puravanchal or eastern Uttar Pradesh, from where he hails, won with a margin of more than 8,000 votes.

"Further counting on these EVMs have no credibility and we demand that our candidates be declared winners.... Last year too, after it became clear that the NSUI was winning three out of four seats, the EVM gods smiled on the ABVP and they won two seats," the Congress joint secretary in-charge of the NSUI, Ruchi Gupta, said.

ABVP national joint organising secretary Shriniwas said: "The Congress and the AAP use the excuse of EVMs every time they lose. DU has rejected the supporters of urban Naxals."

A critic of EVMs, the AAP said: "A government that wants to conduct polls with EVMs all over the country can't even conduct a students' union poll properly with them."

The EVMs had been manufactured by the Electronics Corporation of India Ltd, which also supplies machines to the Election Commission. The EC clarified that the EVMs used in the DUSU polls were not the same as those deployed by the poll panel and that they had been privately procured by DU from ECIL.