Parthasarathi entered politics by becoming Zilla Parishad chairman of the
Anantapur district in 1996. In 1999,
TDP offered him the
MP seat of
Hindupur and he won with a majority of 134,636, defeating
S. Gangadhar of the
Congress Party. In the 2004 Loksabha elections, he was defeated by
G. Nizamuddin with a narrow margin of 1,840 votes. In the 2009 election, he contested as an MLA candidate from Penukonda and won in a triangular fight by 14,385 votes, defeating K T Sreedhar of Congress Party. In the 2014 elections, he again won by defeating Malagundla Sankaranarayana, of
YSR Congress Party. In 2019, Malagundla Sankaranarayana defeated him by a wide margin. He became a
Tirumala Tirupati Devasthanams board member in April 2018. He became district Telugu Desam Party president in 2009. == References ==