The four candidates who filed nomination for Maharashtra are Union Human Resource Minister Prakash Javdekar, former CM Narayan Rane, V Murlidharan and state women commission's Chairperson Vijaya Rahatkar.
Social Justice and Empowerment Minister Thawar Chand Gehlot threw his hat into the ring from Madhya Pradesh.
After scrutiny of papers on Tuesday, all the six candidates are likely to be declared elected unopposed. JD (U) spokesperson K C Tyagi might be considered later for the seat held by Sharad Yadav.
Meanwhile, Rashtriya Janata Dal (RJD) leaders Manoj Jha and Ashfaque Karim have also filed nomination papers for Rajya Sabha in Patna. Sources said the nominee could be former MP Akhilesh Singh. NDA is set to get a big surge in the upper house when votes are counted.
Senior lawyer and Congress spokesman Abhishek Manu Singvi filed his nomination from West Bengal with the support of the state's ruling TMC.
In Gujarat, the Congress state general secretary P K Valera staked claim as an Independent prompting the BJP to field former MLA Kiritsinh Rana as the third candidate to make things hard for the Congress.
Congress President Rahul Gandhi on Sunday approved ten names to contest for the biennial Rajya Sabha elections.
From Karnataka, the Congress has nominated L Hanumanthaiah, Syed Naseer Hussain and GC Chandrasekhar. He belongs to the Vokkaliga community. "This might split the votes of Congress MLAs".
According to reports, Congress' decision to field its third candidate came as a blow to JDS that had hoped Congress would support its candidate, keeping the larger picture of the post poll scenario after the assembly elections in mind.
The Congress has 123 members, including Speaker, BJP - 43, JD (S) - 37, Badavara Shramikarra Raithara Paksha - 3, Karnataka Janata Paksha - 2, Karnataka Makkala Paksha - 1, Independents - 8, and nominated - 1.
Chandrashekar is the third candidate of the Congress.
Former Union minister Akhilesh Prasad Singh, the Congress candidate, was the next to file nomination.
However, state Congress President Bharatsinh Solanki said both Yagnik and Rathwa would win their seats.