Kamala Harris and Donald Trump are set to meet face-to-face for the first time on Tuesday night in what could be their only debate. This high-pressure event will allow them to showcase their vastly different visions for the country after a tumultuous campaign summer.

The debate, taking place at 9 p.m. Eastern in Philadelphia, will offer Americans a detailed look at a campaign that has seen significant changes since the last debate in June. President Joe Biden left the race, Trump survived an assassination attempt, and both sides chose their running mates.

Harris is eager to prove that she can better present the Democratic case against Trump than Biden did. Trump, on the other hand, aims to label the vice president as an out-of-touch liberal while trying to appeal to voters who are unsure if he should return to the White House.