JD-U leader Sharad Yadav, senior lawyer Ram Jethmalani, RJD chief Lalu Prasad's daughter Misa Bharti and Nitish Kumar aide R.C.P. Singh filed their nominations on Monday for the biennial elections to the Rajya Sabha from Bihar.
Sharad Yadav is former Janata Dal-United (JD-U) president and a sitting Rajya Sabha member.
Last week, the JD-U re-nominated Sharad Yadav, and R.C.P. Singh as its candidates for the Rajya Sabha which has five seats from the state to be filled up next month.
The Rashtriya Janata Dal (RJD) chief Lalu Prasad has chosen his elder daughter Misa Bharti and well-known lawyer Ram Jethmalani as party candidates for the Rajya Sabha.
Until Monday it was a toss-up between Misa Bharti and Lalu's former chief minister wife Rabri Devi.
According to RJD leaders in Patna, the party's national and state parliamentary boards authorised Lalu last week to go ahead with the nominations.
RJD leaders said Lalu favoured Jethmalani for two reasons: He is a voluble BJP-basher after being expelled from the party in 2013 and he has been helping the RJD supremo in the multi-crore fodder scam cases.
JD-U and RJD along with Congress are members of the Grand Alliance in Bihar.
The Bharatiya Janata Party (BJP) has nominated its senior leader and former state president Gopal Narain Singh as its candidate for the elections to the Rajya Sabha next month.
With 80 legislators in the Bihar assembly, two RJD nominees will easily sail through.
Out of the total five Rajya Sabha seats, Chief Minister Nitish Kumar's JD-U with 71 legislators will get to send two candidates to the upper house of parliament.