Former Mumbai Mayor Shubha Raul has resigned from the Shiv Sena (UBT) and joined the BJP. Her move comes ahead of the Brihanmumbai Municipal Corporation (BMC) elections scheduled for January 15. Raul's departure is seen as a setback for Uddhav Thackeray's party, particularly as it occurred on the same day Thackeray and Raj Thackeray announced their alliance's manifesto.