The prominent candidates in these constituencies include Union ministers and senior BJP leaders Nitin Gadkari, who is contesting from Nagpur, and Hansraj Ahir, who is the nominee from Chandrapur seat.
More than 45 per cent voters exercised their franchise in Bastar by 3 pm.
Early in the morning, Naxals detonated an IED (improvised explosive device) in Narayanpur district, which comes under Bastar constituency. There were no casualties.
Naxals also triggered an IED blast near a polling booth in Maharashtra's Gadchroli district Thursday while voting was underway. There were no casualties, a police official said.