The current terms of Soni and Bhunder, who are sitting Rajya Sabha members, end on July 4.
"Both Soni and Bhunder have been declared elected unopposed to the Rajya Sabha," Punjab Vidhan Sabha Secretary, Shashi Lakhan Pal Mishra said.
Both the leaders were present in the Punjab Vidhan Sabha Secretary's office who declared them elected.
Soni was accompanied by senior Punjab Congress leaders including Leader of Opposition in State Assembly Charanjit Singh Channi, Jagmohan Singh Kang, Randeep Singh Nabha, Brahm Mohindra, among others.
The scrutiny of the nominations was held on June 1 and today was the last date for withdrawal of candidature after which the two candidates were declared elected.