The seven seats - Munger, Nalanda, Patna Sahib, Patliputra, Ara, Buxar and Jehanabad - will go to polls on April 17.
Among these, Nalanda, which is better known as the ancestral place of Chief Minister Nitish Kumar, has the maximum 22 candidates.
Pataliputra, with 20 candidates in fray is hogging the limelight as RJD president Lalu Prasad's eldest daughter Misa Bharti is pitted against his former trusted colleague-turned-foe Ram Kripal Yadav who is contesting on a BJP ticket.
Sinha is being countered by Congress candidate and Bhojpuri actor Kunal and Aam Aadmi Party's Parveen Amanuallh, former social welfare minister who resigned from the Nitish government.
Buxar with 16 candidates, Jehanabad with 15, Munger with 13 and Ara with 12 contestants come down the line.