The figures from Nielsen released today are across 15 networks.
The debate between Pence and Harris in 2020 drew 59 million viewers, the second most-watchedVP debatein history.
The 2008 debate between Joe Biden and Sarah Palin has the record, drawing an estimated 69.9 million.
(L-R) JD Vance and Tim Walz on Tuesday nightAngela Weiss / AFP / Chip Somodevilla / Getty Images
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ABC News Trump-Harris presidential debate last month drew67.14 millionacross 17 networks last month.
The CBS News event, which ran from roughly 9-10:45 p.m.
ET, was also simulcast by its rivals.
The figures come from Fox and MSNBC.
The 2020 debate averaged about 51 million in early numbers across those networks.
Nielsen is expected to release a more complete picture of the audience total later today.
