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Lalu, Mulayam and Mayawati are seasoned POLITICIANS. They are clever, cunning and hence effective exploiters as politicians usually are! Politicians cant afford to be whimsical. Mamta is not cunning, she is sincere and bold and can fight very hard. But when it comes to governing a state or a country, many more other qualities are needed which she lacks. Withdrawing the railway minister and her approach to press and freedom of expression etc shows her immaturity and ignorance. A country cant be ruled based on her whims, at the most, such people can be a good oppositions leaders.