New Delhi, April 27 -- In a significant realignment in Parliament's Upper House, seven rebel MPs from the Aam Aadmi Party have formally joined the Bharatiya Janata Party, reshaping the numerical balance in the Rajya Sabha and strengthening the ruling coalition's legislative hand.

The updated party-wise position on the Rajya Sabha website on Monday reflected the induction, days after Raghav Chadha and six other MPs broke ranks with AAP and opted to merge with the BJP. The development followed Chadha's removal from the post of deputy leader in the Upper House last month, a move that had signalled deepening fissures within the party's parliamentary wing.

Sources said the Rajya Sabha Chairman has accepted the merger of the seven MPs with the ...