Dadar - Poll season calls for migration, apart from the flamingos who camp near Mumbai during the winter, leaders are following the bandwagon. Joining the league is the corporator of ward number - 18, Sandhya Vipul Doshi of NCP. She has served as NCP corporator for two terms. She joined the saffron party Shiv Sena in presence of the party chief Uddhav Thackeray on Monday. Present to welcome Sandhya Doshi were Shiv Sena party workers and corporator Prakash Surve.