The Parliament has two houses — and while the BJP can afford to ride roughshod over its allies in the lower house, the Lok Sabha, it needs them in the Rajya Sabha to push through important legislative business such as bills, amendments and new laws.

from Times of India https://timesofindia.indiatimes.com/india/lok-sabha-election-results-why-the-bjp-still-cant-do-without-nda/articleshow/69493201.cms