Asked about the challenge thrown to his re-electon bid by rival Pappu Yadav, Sharad Yadav sarcastically asked, "Why are you lowering my stature by taking his name?"
Sharad highlighted work done by him for the area and said many more work needed to be done.
He said as people's representative, he had raised the issue of scam in Commonwealth Games following which Congress leader Suresh Kalmadi was arrested.
Madhepura will go to polls in the fourth phase on April 30.
In previous elections in the constituency, Sharad Yadav had defeated Lalu Prasad and lost to him once.