Mamata Banerjee has witnessed the Left Front rule in Bengal for 34 years and in these 34 years she fiercely fought against them in the streets. Gradually she wrested power from them and formed the government and soon mastered the art of governing the state. This time she applied the same formula to even defeat the Left. Even the weak Left-Congress alliance went in her favour. The third important factor was the constant negative campaigning against her which helped Mamata garner sympathy from the electorate. And finally the fourth important factor behind her win is the lack of BJP’s presence as a formidable force in Bengal which ensured Mamata Banerjee winning by a thumping two thirds majority in the Assembly polls this time.