The takeaways from the Kamala Harris-Donald Trump US presidential debate

An hour into the debate, Harris' strategy - to call Trump out for his past actions, particularly his efforts to overturn the 2020 election - appeared to be paying off. Trump was continually on the defensive.

Republican presidential nominee former President Donald Trump and Democratic presidential nominee Vice President Kamala Harris participate during an ABC News presidential debate at the National Constitution Centre in Philadelphia. (AP Photo/Alex Brandon)

Democrat Kamala Harris and Republican Donald Trump met on Tuesday for their first and perhaps only debate, a square-off that could have a significant impact on the November 5 election as polls show a tight race.

Here are takeaways from the debate: