In politics nothing is impossible and so I cannot rule out the possibility that Mamata Banerjee can become the Prime Minister someday. More unlikely candidates have made it to the post. Deve Gowda or IK Gujral were not national players before they found themselves heading the nation. Mamata can certainly stake more claim to the Prime Ministership for the simple reason that the idea is not completely unheard of. She has been a prominent member of the Congress and she has founded her own party which is currently ruling a state like West Bengal. She is at least visible. She has charisma.