Battleground Bengal: This Is Why Some Exit Polls Projecting A Trinamool Win May Be Wrong by Jaideep Mazumdar - Apr 30, 2021 05:31 AM Mamata Banerjee. Snapshot All the pollsters predicted that the BJPâs tally in Bengal would be in single digits only. Thatâs because the electorate did not declare who they voted for honestly. The outcome of the polls could be as surprising as 2019. And prove many pollsters quite wrong as well. The results of the exit polls for Bengal, announced soon after polling in the last and eighth phase concluded on Thursday (29 April) predicted widely varying outcomes. While two of them gave Bharatiya Janata Party (BJP) a clear win, two others said the Trinamool would return to power with a comfortable majority and two others suggested a very close fight with chances of a hung assembly.