Three decades after Hindu mobs tore down a historical mosque, Indian Prime Minister Narendra Modi will attend the consecration of a grand Hindu temple at the same site on Monday in a political move to boost his party ahead of a crucial national vote.

Experts say the temple, dedicated to Hinduism’s most revered deity Lord Ram, will cement Modi’s legacy — enduring but also contentious — as one of India’s most consequential leaders, who has sought to transform the country from a secular democracy into an avowedly Hindu nation.

“Right from the beginning, Modi was driven by marking his permanency in history. He has ensured this with the Ram Temple,” said Nilanjan Mukhopadhyay, an expert in Hindu nationalism and author of a book on Modi.

Many see the temple’s opening as the beginning of the election campaign for Modi, an avowed nationalist who has been widely accused of espousing Hindu supremacy in an officially secular India. Modi’s Hindu nationalist party is expected to once again exploit religion for political gain in the upcoming national elections in April or May and secure power for a third consecutive term.