With just two weeks remaining until the U.S. presidential election, approximately 21 million Americans have already cast their ballots amidst a heated campaign between Democratic Vice President Kamala Harris and Republican candidate and former President Donald Trump.

Data from the Election Lab at the University of Florida shows that around 7.8 million votes have been submitted through early in-person voting, while more than 13.3 million votes have been sent via mail-in ballots.

Unlike India's general elections, where campaigning must cease 36 hours before voting begins, in the U.S., campaigning and voting occur simultaneously for a period of about four weeks.