By using Sanghi, Digvijaya Singh is apparently referring to the RSS, the parent organisation of the BJP.
Source: wiktionary
Sanghi
Synonyms for "sanghi" (4 found)
Ranked by relevance and common usage.
Sample sentences
2 total sentences available.
BJP leaders including H Raja posted clips of old newspapers and posters to support Rajini’s [Rajinikanth, an Indian film actor] claim about the Salem rally, while the DMK and its allies mocked the actor for "superficial" comments and aligning with right-wingers even before launching his political party formally. Hashtags like "Can't apologise" and "Sanghi Rajini" were trending through the day.
Source: wiktionary