Tharoor, who was re-elected from the Thiruvananthapuram constituency, had defeated Rajagopal in the closely contested polls in April this year.
The affidavit was filed on an election petition filed by S Suresh, a BJP worker, challenging Tharoor's election.
According to Rajagopal, Tharoor's election should be set aside as there was non-compliance with the provisions of Representation of Peoples Act and Rules.
"There is no whisper about the property that devolved on Tharoor though jointly with son of Sunanda Pushkar'. There is also no disclosure of amounts given to Sunanda to discharge her mortgaged liabilities," the affidavit stated.
