[3] He represented Andole constituency as a Member of the Legislative Assembly (MLA) from the Indian National Congress, and held ministerial portfolios of Higher education and Agriculture (in charge).

[5] Narasimha began his political career in 1989 when he was elected as an MLA from Andole (SC) constituency as a member of Indian National Congress.

[5] In 2004, Narasimha joined YS Rajasekhar Reddy's cabinet as a Minister for Primary Education.

[5][7] Narasimha became Deputy Chief Minister of Andhra Pradesh on 10 June 2011 and served until April 2014.

[8][9] In 2023 Assembly Elections he contested from Andole and won with a majority of 27427 votes on BRS candidate Chanti Kranthi Kiran.