Prime Minister Manmohan Singh is in Bihar on Saturday to campaign for Congress candidates contesting in the assembly polls.
Dr Singh is scheduled to address an election meeting at Narpatganj.
Bihar Congress spokesperson Prem Chandra Mishra said: "Dr Singh's visit would boost the electoral prospects of Congress nominees in Bihar."
Congress General Secretary Rahul Gandhi had already campaigned in the state while party chief Sonia Gandhi is expected to visit the state soon.
The six-phase poll for 243 seats begins from October 21 and concludes on November 20
The first phase of elections will take place on October 21 for 47 state assembly seats, the second phase on October 24, the third phase on October 28 for 48 seats, the fourth on November1 for 42 seats, the fifth phase on November 9 for 25 seats and the sixth and last phase on November 20 for 26 seats.
Counting of votes will take place on November 24.
