JMM supremo Shibu Soren won the Dumka seat defeating BJP's Sunil Soren by 39,030 votes and pushed former Chief Minister and Jharkhand Vikas Morcha (Prajatantrik) president Babulal Marandi to the third position.
JMM's Vijay Kumar Hansdak also won from Raj Mahal constituency by 41,337 votes over BJP's Hemlal Murmu.
BJP had won 13 seats in 1998 and 12 in 1999.
BJP's Sunil Kumar Singh won Chatra seat, beating his nearest Congress rival Dhiraj Prasad Sahu by 1,78,026 votes, Returning Officer Amit Kumar said.
Sitting BJP MP Pashupati Nath Singh won Dhanbad Lok Sabha seat, sweeping away his nearest Congress rival Ajay Kumar Dubey by a margin of 2,92,948 votes.
Lok Sabha Deputy Speaker Karia Munda emerged victorious from the Khunti (ST), trouncing Jharkhand Party candidate and former state minister Anosh Ekka by 92,948 votes.