He joined Bharat Rashtra Samithi in September 2014,[1][4] and was inducted into the cabinet in December 2014 and serving as Minister for Roads and Buildings Department in present TRS Government.

[6] Having served for some time as a member of the Telangana Legislative Council, in May 2016 Rao again gained an Assembly seat when he won the Palair constituency in a by-election,[7] winning with a majority of 45,676 votes.

In 2023 Assembly Elections he contested from Khammam and won with a majority of 49381 votes on BRS candidate Puvvada Ajay Kumar.

That is, Thummala Nageswara Rao, who was elected MLA five times, served as a minister in many key departments from Khammam district.

After being elected, Thummala became a member of the then Chief Minister NT Rama Rao's cabinet for the first time.

Later, Tummala joined the Telangana Rashtra Samithi on 5 September 2014 and became the Minister of Roads, Buildings and Women and Child Welfare on 16 December 2014.

During his 40-year political reign, he served as a minister in various departments in the cabinets of NT Rama Rao, Chandrababu Naidu and KCR.

As a result, the farmers of Vemsur are sustaining themselves economically by growing horticultural crops like plam oil farm, cotton, groundnut, rice, maize, guava and lemon.

Bhakta Ramadasu, Sitarama Projects, Modernization of Paleru Old Canal Construction of a new palm oil factory at Apparao Peta for this palm oil farmer As a TDP MLA in the Andhra Pradesh legislature, Thummala was Minor Irrigation Minister in the cabinet led by N. T. Rama Rao and held the ministerial portfolios of Prohibition and Excise, Major Irrigation, and Roads and Buildings at various times during the successive governments led by Chandrababu Naidu.