On a wheelchair, she briefly paused before photojournalists while coming out amid shouts of "Didi, Didi", before boarding her car. She also showed a victory sign towards the cameras.
Mamata is a two-term MLA from Bhabanipur, but is contesting the elections this time from Nandigram in the Purba Medinipur district, taking on BJP's Suvendu Adhikari.
Earlier in the day, senior TMC leader Abhishek Banerjee, who is the chief minister's nephew, also voted at the same booth.
TMC has fielded veteran politician Sobhandeb Chattopadhyay from Bhabanipur against BJP's celebrity candidate Rudranil Ghosh. The Left-led Sanjukta Morcha has fielded Congress's Md Shadab Khan. Bhabanipur was voting in the seventh phase of the assembly elections in West Bengal.