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It advocates for the rights and welfare of Scheduled Castes, particularly Devendra Kula Vellalar caste. Its founder-President is K. Krishnaswamy. The analogical studies based on the number of vote it secured from the polls of 1999 and again in 2009 clearly indicates that the party sustains its support base without any change in Rajapalayam, Tenkasi, Tirunelveli and Trichy.
1999 Lok Sabha elections
In the 1999 general election, major parties faced a stiff competition from Puthiya Tamizhagam (PT) candidates in Tenkasi (Krishnasamy) and Tirunelveli (P. V. Bhakthavathchalam). While Krishnasamy secured 1,86,220 votes in Tenkasi, Bhakthavathchalam polled 1,12,941 votes in Tirunelveli.
2001 State Assembly elections
Formed alliance with DMk and contested 10 seats and lost all the seats.
2009 Lok Sabha elections
The best performance from PT came in 2009 Lok Sabha elections when Krishnaswamy secured 1,16,685 votes in Tenkasi, while the victory margin was 35,324 votes and he was not part of any major alliance.
2011 State Assembly elections
During 2009 Lok Sabha Puthiya Tamilazham party had chosen not to form an alliance with any other parties. In 2011 Puthiya Tamilazham party has announced its interests in joining hands with the All India Anna Dravida Munnetra Kazhagam party. In 2011 elections, the party won two: Krishnasamy secured 71,330 votes in Ottapidaram constituency and A. Ramaswamy secured 75,124 votes in Nilakkottai constituency.
2016 State Assembly elections
It formed Alliance with DMK and contested 4 seats Oatapidaram,Srivalliputhur,Krishnarajapuram and Vasudevanallur . k krishnaswamy contested in oatapidaram Constituency and lost the seat to Sundarraj Of AIADMK.