President Donald Trump and Democratic challenger Joe Biden will hold competing prime-time Q&A sessions later on Thursday, from separate locations.
The events replace a cancelled second presidential debate after Mr. Trump’s refusal to participate virtually following his Covid-19 diagnosis. The twin events, both televised at 20:00EST (00:00 GMT), will see the candidates field questions from voters.
Millions of early ballots have already been cast for the 3 November election. Opinion polls suggest Mr. Biden has a 10-point advantage over Mr. Trump nationally, but his lead in some key states is narrower.
Campaigning has picked up the pace this week, with Mr. Trump holding rallies in the battleground states of Florida, Pennsylvania and Iowa, and Mr. Biden travelling to Ohio and Florida.