Millions of U.S. voters are set to cast their ballots Tuesday as they decide whether Vice President Kamala Harris or former President Donald Trump will be the country’s next leader.

Polls heading into Election Day indicated a tight race, particularly in a group of battleground states that will be key to deciding the winner.

Both candidates made stops Monday in Pennsylvania, one of those closely watched states, holding a series of rallies including nearby each another in the Pittsburgh area as they projected confidence in their own campaigns.

Democratic presidential nominee Vice President Kamala Harris addresses a campaign rally in Pittsburgh, Nov. 4, 2024.