RCP Singh had earlier said that the allegations of irregularities in acquiring properties were an attempt to humiliate him.
Rajya Sabha elections to the four seats will take place on June 10. Congress has fielded three candidates and BJP has fielded one.
Rashtriya Lok Dal chief Jayant Chaudhary on Sunday said debates such as those on the Gyanvapi mosque should not be entertained in modern democratic India.
The SP leaders completing their terms include former Uttar Pradesh Legislative Council chairman Sukhram Singh Yadav, whose son Mohit has joined the BJP....