In the two Naxal-hit constituencies - Simri Bhakhtiyarpur and Mahisi in Saharsa district, the polling time has been cut short by two hours and would end at 3 pm.
The 57 constituencies include 24 in Seemanchal region bordering West Bengal and spread over nine districts of Madhubani, Darbhanga, Supual, Madhepura, Saharsa, Araria, Kisanganj, Purnea, and Katihar.