Congress's Devti Karma won the bypoll for the seat, reserved for Scheduled Tribes, by a margin of 11,192 votes, a poll official said.
The Congress has pinned its hopes on many of the old-timers and also given representation to some new faces in its first list of candidates announced for the Chhattisgarh assembly polls scheduled next month.
A total of 10 women candidates, one less than last time, have emerged victorious in Chhattisgarh Assembly polls where the saffron party is back in power for the third time.
The Bharatiya Janata Party on Sunday scored a hat-trick of victories in the Chhattisgarh assembly elections, winning 49 of 90 seats, thwarting the Congress' bid to wrest power after a decade.
Of the 12 seats in Bastar, the Congress won eight. The BJP had secured 11 of these seats in 2008.