With closing of the application process, a total of four candidates have filed nominations for election of three Rajya Sabha seats from Assam, to be held on February 7.

Congress' present Rajya Sabha member Bhubaneshwar Kalita and Lok Sabha member from Sultanpur in Uttar Pradesh Sanjay Singh filed their nominations, while the party's ally in the state Bodoland Peoples Front have fielded its present member of the Upper House Biswajit Daimary.

Former journalist Haidar Hussain was the last candidate to file his nomination with support from the opposition in the Assam Legislative Assembly, comprising BJP, AGP and AIUDF.

"Today three candidates filed nominations, while one person filed yesterday. The last date of filing the nomination ended today," Assam Legislative Assembly Principal Secretary Gauranga Prasad Das told PTI.