Cumbum, located in the scenic Cumbum Valley in Theni district, has seen varied political representation across major parties over the years. In the 2021 Assembly elections, DMK’s N. Eramakrishnan won with 1,04,800 votes, defeating AIADMK’s Syedukhan S. P. M. by a margin of 42,413 votes. In the 2016 Assembly elections, AIADMK’s S. T. K. Jakkaiyan won with 91,099 votes, defeating DMK’s N. Eramakrishnan by 11,221 votes. In the 2011 Assembly elections, DMK’s N. Eramakrishnan won with 80,307 votes, defeating DMDK’s P. Murugesan. Historically, since the 1977 elections, the AIADMK has won the constituency four times, while the DMK has secured three victories. The 234-seat Assembly election in Tamil Nadu will see the ruling Dravida Munnetra Kazhagam (DMK), led by Chief Minister M K Stalin, take on the opposition All India Anna Dravida Munnetra Kazhagam (AIADMK) and a resurgent BJP-led alliance. The campaign is centred around issues such as welfare schemes, law and order, and the broader debate between Dravidian political identity and national integration narratives. While the DMK government is highlighting its record on industrial growth and social justice, the opposition has targeted it over allegations of corruption and concerns about power shortages.