How will Harris debate Trump? Six key moments offer insight

Debate could allow Harris to deliver on her oft-repeated promise: that she will prosecute the case against Trump

Kamala Harris and Donald Trump will arrive in Philadelphia, Pennsylvania, on Tuesday for their first (and potentially only) presidential debate. The event will mark the first time that Harris and Trump have ever met face to face, and it comes less than two months after Joe Biden withdrew from the presidential race following his own fateful debate performance in June.

The change at the top of the Democratic ticket appears to have unnerved Trump and his campaign advisers, who have struggled to land attacks against Harris. The debate will present Trump with his most significant opportunity yet to negatively define Harris in voters' minds, as polls show a neck-and-neck race in key battleground states.