It's the final showdown between US President Donald Trump and challenger Joe Biden, and this time there'll be mute buttons (for the first four minutes of each topic). Today the debate will be divided into six 15-minute segments, chosen by moderator Kristin Welker:

1:18 - Fighting COVID-19
22:00 - National security
42:15 - American families
1:03:48 - Race in America
1:18:00 - Climate change
1:29:40 - Leadership

It's the last debate before the election - and it comes as more than 47 million Americans have already voted. So will today actually make a difference at the polling booths, or have Americans already made up their minds? Join us here as we stream the debate from Belmont University in Nashville, Tennessee.

Subscribe: http://ab.co/1svxLVE We're following today's debate on the live blog as well, read here: https://www.abc.net.au/news/2020-10-23/watch-donald-trump-joe-biden-final-debate-live-updates/12782100

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