Singh, a Congress member of the Rajya Sabha from Assam, also resigned from the Upper House of Parliament, sources said, adding that Rajya Sabha Chairman M Venkaiah Naidu has accepted his resignation. Addressing a press conference here, the leader said he would join the BJP on Wednesday.

from Times of India https://timesofindia.indiatimes.com/india/sanjay-singh-resigns-from-congress-rajya-sabha-to-join-bjp/articleshow/70448603.cms