As Trump and Harris spar, ABC's moderators grapple with conducting a debate in a polarized country FILE - ABC World News Tonight Anchor David Muir, left, addresses members of the audience while standing with ABC News Live Anchor Linsey Davis, Friday, Feb. 7, 2020 in Manchester, N.H. (AP Photo/Elise Amendola, File)
San Francisco Republican party Chair John Dennis watches a presidential debate between Democratic presidential nominee Vice President Kamala Harris and Republican presidential nominee former President Donald Trump at Mad Dog In The Fog on Tuesday, Sept. 10, 2024, in San Francisco. (AP Photo/Juliana Yamada)
People watch the presidential debate between Republican presidential nominee former President Donald Trump and Democratic presidential nominee Vice President Kamala Harris, Tuesday, Sept. 10, 2024, at the Gipsy Las Vegas in Las Vegas. (AP Photo/John Locher)
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FILE - ABC World News Tonight Anchor David Muir, left, addresses members of the audience while standing with ABC News Live Anchor Linsey Davis, Friday, Feb. 7, 2020 in Manchester, N.H. (AP Photo/Elise Amendola, File)