In Bihar, bye-elections will be held for the assembly seats of Bochaha, Warisnagar and Chenari (all Scheduled Castes), and Aurai, Kalyanpur, Ramgarh, and Chainpur.
Buoyed with its success in the Lok Sabha elections, the Congress has decided to contest the Bihar by-polls on its own, having cold-shouldered overtures of Rashtriya Janata Dal (RJD) chief Lalu Prasad and Lok Janshakti Party (LJP) president Ram Vilas Paswan.
The BJP and the Janata Dal-United (JD-U) have an alliance that is ruling the state.
In Madhya Pradesh, bye-elections would be held for Gohad and Tendukheda constituencies. In Andhra Pradesh, Tekkali constituency will go to the poll.
In Sikkim, Namchi Singithong and in Uttarakhand Vikasnagar will go for bye-elections.
In Delhi, the by-poll will be held for the Dwarka seat after sitting legislator Mahabal Mishra (Congress) became an MP.