Former Congress president Sonia Gandhi and Railway minister Ashwini Vaishnaw were among the 14 who took oath as members of the Rajya Sabha on Thursday.
Vice-president and Rajya Sabha Chairman Jagdeep Dhankhar administered the oath to them in the new Parliament house building.
While Sonia Gandhi took oath as a member of the Upper House from Rajasthan, Vaishnaw was sworn in as a member of the same house from Odisha.
Congress leader Ajay Maken from Karnataka, BJP leader R P N Singh from Uttar Pradesh, and BJP member Samik Bhattacharya from West Bengal were among the 14 who took the Rajya Sabha oath.
YSRCP leaders Gola Babu Rao, Medha Raghunath Reddy, and Yerum Venkat Subba Reddy also took oath as members representing the state of Andhra Pradesh.
They all later took a group photograph with the RS Chairman.