Uddhav Thackeray’s Shiv Sena (UBT) suffered setbacks in BEST elections and Kalyan-Dombivli as key leaders defected to Eknath Shinde’s Shiv Sena. Two former UBT corporators, Prema Mhatre and Pramila Patil, along with taluka chief Mukesh Patil, joined Shinde’s camp.