(CNN) — Celebrities, industrialists and politicians cast their vote in the world’s biggest democracy as polls opened in India’s financial capital during a weekslong nationwide election, in which Prime Minister Narendra Modi is seeking another five-year term.

Voting took place in six constituencies across Mumbai in the western state of Maharashtra, and 43 others nationwide, on Monday as millions flocked to polling booths to determine who will lead the world’s most populous country.

CNN’s Jessie Yeung contributed reporting.