Exit Polls numbers for Rajasthan, Chhattisgarh and Madhya Pradesh reveal that BJP is all set to sweep the Lok Sabha seats in these states despite the setback in the Vidhan Sabha elections
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.
In 2014 General Elections, Today's Chanakya came the closest with its prediction of 291 seats for the BJP and 340 for the NDA, overestimating BJP by 9 and NDA by 4
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.