Voting in India’s mammoth national election ended Sunday with the seventh and final phase of a grueling poll that lasted more than five weeks, as exit polls predicted a victory for Prime Minister Narendra Modi’s Hindu nationalist party and its allies.

Vote counting begins on Thursday, and the election result will likely be known the same day.

"The election is seen as a referendum on Modi and his Bharatiya Janata Party. The BJP’s main opposition is the Congress party, led by Rahul Gandhi, the scion of the Nehru-Gandhi dynasty that has produced three prime ministers,"report agencies.

Exit polls by four leading television news channels – Republic, TimesNow, New Delhi Television and India today- projected a victory for the BJP and its allies with 287 to 339 seats out of 543 – far ahead of the 272 seats needed to form the next government.

The Congress party and its allies are likely to win 122 to 128 seats, the TV channels said. Indian television channels have had a mixed record in the past in predicting election results.

Total voter turnout in the national election was 64.9%, the election commission said, lower than 66.40% in the last national vote in 2014.