Shiv Sena president Uddhav Thackeray was on Tuesday assured of support by representatives of north Indian residents at a meeting held at Shiv Sena Bhavan here. The meeting is viewed as the Shiv Sena's attempt to secure its support base among north Indians, a significant vote bank that can swing the outcome of upcoming polls to the Brihanmumbai Municipal Corporation (BMC), which has been under Sena's control for three decades.