In the 2010 state assembly elections, Manju Hajari of BJP won the Rosera seat defeating her nearest rival Pitamber Paswan of RJD. In the 2015 state assembly elections, Dr. Ashok Ram won from congress party in collaboration with Mahagathbandhan and defeated Manju Hajari.
In the 2010 state assembly election, Manju Hajari of BJP won the Rosera seat against Pitamber Paswan of RJD. In 2015, Dr. Ashok Ram from Congress party, working with Mahagathbandhan, defeated Manju Hajari in the same seat.