Mamata Banerjee is an Indian politician who is serving as the eighth and current chief minister of the Indian state of West Bengal since 20 May 2011, the first woman to hold the office. Having served multiple times as a Union Cabinet Minister, Mamata Banerjee became the Chief Minister of West Bengal for the first time in 2011. She founded the All India Trinamool Congress in 1998 after separating from the Indian National Congress, and became its second chairperson later in 2001. She is often referred to as Didi.

The All India Trinamool Congress is an Indian political party that is mainly influential in the state of West Bengal. It was founded by Mamata Banerjee on 1 January 1998 as a breakaway faction from the Indian National Congress and rapidly rose to prominence in the politics of West Bengal under her leadership. Presently, it is ruling the state of West Bengal beside being the third-largest party in India in terms of number of MPs just after the BJP and INC.