Jahanabad Lok Sabha constituency is one of the 40 Lok Sabha (parliamentary) constituencies in Bihar state in eastern India.Jahanabad constituency has a total of 12.7 lakh electorate out of which 2.3 lakh are Yadavs, 2.3 lakh are Bhumihar,1.5 lakh are chandrawanshi and EBC 1 lakh and 2.5 lakh Luv Kush (1 lakh kurmi + 1 lakh Koiri) voters.