The month-long wheelchair campaign of chief minister Mamata Banerjee has been marked as the prime campaign during the election. It was on March 10 that Banerjee suffered her foot injury in Nandigram during campaigning. Two days later, she was released from a hospital in Kolkata. And then she began her campaign in a wheelchair. So, does the wheelchair campaign helped Mamta Banerjee as a sympathy factor? See what election analyst says? Watch video.