The 37% of the votes he won are from India's backward states which have a high representation in Parliament. The Southern states of India, which are more progressive, gave them very few wins and they have zero state govt.s in these southern states.

Currently, Modi govt has an absolute majority in the Lower House of Parliament (Lok Sabha) and this absolute majority is used to ram through bills & laws without discussion. Their absolute majority allows them to pass corporate-friendly laws and laws that wreck India's institutions.

Most of Modi's "supporters" that we come across online are actually paid members of BJP 's online troll army aka IT cell. In India its joked that they're paid Rs. 2/- per tweet.