In 1969, the open conflict between the Syndicate and Indira Gandhi became apparent. The death of President Zakir Hussain that year led to a vacancy in the position of President of India. Despite Mrs. Gandhi's reservations, the 'Syndicate' successfully put forth her enduring adversary and the then-Speaker of the Lok Sabha as the official Congress nominee for the upcoming Presidential elections.

At the end of the 1960s, what was the name given to the various non-Congress parties that came together to form joint legislative parties that supported non-Congress governments?

Samyukt Vidhayak Dal, SVD

Various non-Congress parties came together to form joint legislative parties (called Samyukt Vidhayak Dal in Hindi) that supported non-Congress governments. That is why these governments came to be described as SVD governments. In most of these cases, the coalition partners were ideologically incongruent.