Through the letter, which was written on October 5, the Congress MP has formally announced his decision of not contesting the upcoming general elections on Congress ticket.
The letter says,"because of the biased attitude of the Chief Minister Bhupinder Singh Hooda towards my constituency in development works, I would not be contesting the next election on the Congress ticket".
The MP alleged in the letter,"The CM uses his powers against those whom he does not like. I have brought this matter to your attention as well as to the notice of all previous general secretaries in-charge of Haryana since 2008. The Congress president too has been told. Nothing however has ever come of it".
Rao also alleged that the chief minister has been trying to marginalise his political colleagues within the party.
"It is a painful and emotional decision to say that I will not fight next election on Congress ticket, as I have been associated with the Congress for the last 35 years," the MP said.