Modi was scheduled to cast his ballot in the city of Ahmedabad in his home state of Gujarat, during the third round of voting, which India conducts in phases.
He remains widely popular a decade since coming to power, in large part due to his government positioning of the nation’s majority faith at the centre of its politics, despite India’s officially secular constitution.
In January, the prime minister presided over the inauguration of a grand temple to the deity Ram, built on the site of a centuries-old mosque razed by Hindu zealots decades earlier.
Construction of the temple fulfilled a long-standing demand of Hindu activists and was widely celebrated across India, with extensive television coverage and street parties.
Modi’s brand of Hindu-nationalist politics has in turn made India’s 220-million-plus Muslim population increasingly anxious about their future in the country.
The election commission has not sanctioned Modi for his remarks despite its code of conduct prohibiting campaigning on “communal feelings” such as religion.
HOT WEATHER
India’s election is conducted in seven phases over six weeks to ease the immense logistical burden of staging the democratic exercise in the world’s most populous country.
Much of southern Asia was hit by a heatwave last week that saw several constituencies vote in searing temperatures.
In the city of Mathura, not far from the Taj Mahal, temperatures crossed 41 degrees Celsius on polling day, and election commission figures showed turnout dropping nearly nine points to 52 per cent from five years earlier.