Chepauk was the legislative assembly constituency, that included the city, Chepauk. Chepauk Assembly constituency was part of Chennai Central Lok Sabha constituency. After the constituency delimitation of 2008, this constituency was merged into the newly formed Chepauk-Thiruvallikeni Assembly constituency.
The constituency is famous among people of Tamil Nadu as five-time Chief Minister of Tamil Nadu, Kalaignar Karunanidhi contested thrice and won all three times from Chepauk Assembly Constituency.