The majority of these state legislature vacancies are due to MLAs becoming MPs in the 18th Lok Sabha. This group includes Akhilesh Yadav, Shivraj Singh Chauhan, Basavraj Bommai, Jitan Ram Manjhi, and HD Kumaraswamy, who have been chief ministers before. Sikkim's CM, Prem Singh Tamang, elected to keep one seat, forcing a byelection.
