If the current 2019 Lok Sabha elections follow the general trend, then again for this election, pollsters will underestimate the vote-share of the PM Modi led NDA quite significantly.
Sensing that PM Modi might just come back to power for a second term, he has proceeded to discredit his own channel's Exit Poll which is yet to be aired.
Indo-Asian News Service (IANS), in a gross violation of the Model Code of Conduct rules, published a comprehensive Exit Poll on 12th May for the 2019 Lok Sabha elections
Most of the pollsters have gone wrong in predicting the state elections, except few. These surveys can just be an indicator of the overall mood of the people in the state, otherwise, it should be taken with a pinch of salt.