Rao Dan Singh completed his education from Jaipur and Chandigarh. He holds LLB, MBA, Diploma in Labour Law and MA degrees. He was previously serving as the President of Rajasthan University. He also served as the General Secretary of the Youth Congress in Haryana.
After watching his work with the Youth Congress Party, it was decided that he will be given an MLA ticket for the 2000 Haryana State elections. He won the elections and became an MLA for the first time in 2000. After which, he defended his seat for twice in a row in 2005 and 2009 general elections.
In 2014 though, he lost the elections and during this period, he was also booked by the election commission for his cruelty towards animals. The very same year, he along with his son were also booked in a land fraud case.