"The last free and fair election in West Bengal was held in july 1977" - with all due respect, how did u know sir? how then at all the exit polls and all poll surveys it shows the left as the winner? Do you know about last assembly elections in the state with unprecedented security, with thousands of paramilitary jawans posted, and elections held in five phases. Not a single violent incident, not a single false voting case was reported. Everyone could excercise their right freely. Even the opposition could not cite any wrongs! (until results were declared). And the left won with thumping majority.