There are the following left wing student organizations in JNU:
The Students Federation of India (SFI) is the student wing of the CPI(M) and the second oldest and the largest left students organization. It has throughout its history been the dominant force in the student union being in the majority in the union 18 out of 30 times. It was formed in 1970 in Trivendrum and has people like Prakash Karat and Sitaram Yechuri as notable leaders who became senior leaders in the CPI(M).
The All India Students Association (AISA) previously used to control the student union with an absolute majority, but not anymore. It is currently the organization with the biggest cadre base. It is the students wing of the CPI(ML)-Liberation, a Naxalite party which has now given up violence and joined the electoral process. AISA was formed in 1992 in Allahabad and is considered ultra-left.
The Democratic Students Federation (DSF) is a breakaway group from the SFI. The leaders of DSF broke away from SFI in 2012 on their opposition to the decision of the CPI(M) to provide support to Pranab Mukherjee in the elections. The expelled leaders initially worked under ‘SFI-JNU’ but changed the name in January 2013. It is an independent student organization but has leaned towards the AAP in the recent past.
The All India Students Federation (AISF) is the oldest student organization in India. It was formed in 1936 to create a student front to fight the British. Both Nehru and Jinnah attended the founding session in Lucknow. It became the student wing of the CPI subsequently but weakened due to the split within the CPI that led to the formation of the CPI(M) in 1964 and subsequently the SFI. In the past it has fought in alliance with the SFI in JNU but presently aligns with the DSF.
The Democratic Student Union (DSU) is a far left student organization affiliated to the Maoist ideology. It doesn’t fight elections due to its opposition just like CPI(Maoist).
Via Akshat Seth