India's BJP opposition party heading for majority - opinion poll

A supporter of Hindu nationalist Narendra Modi, prime ministerial candidate for India's main opposition Bharatiya Janata Party (BJP), wears a mask depicting Modi as he sits before the start of an election campaign rally in the southern Indian city of Chennai April 13, 2014. REUTERS/Babu

NEW DELHI (Reuters) - India's Hindu nationalist BJP opposition party and its allies are set to win a narrow majority in the world's largest democratic election, the latest opinion poll showed on Monday.

The Bharatiya Janata Party, led by prime-ministerial hopeful Narendra Modi, and its allies have until now been forecast to win the largest chunk of the 543 parliamentary seats but fall short of the 272-seat mark needed for a majority.