Lok Sabha Speaker Om Birla officially approved the merger of six Shiv Sena UBT lawmakers with the Eknath Shinde-led Shiv Sena on Saturday.
The Lok Sabha table office issued a revised party position circular, leaving the Uddhav Thackeray-led Sena UBT with only three MPs.
Speaker Om Birla allotted separate seating for 20 rebel Trinamool Congress MPs who have applied to merge with the Nationalist Citizens Party of India.