The town hall also dominated that night in cable news among adults 25-54, more than doubling its time slot competitor from FNC, Life, Liberty and Levin.
Baier and MacCallum have previously co-anchored Fox News election coverage and also moderated a town hall together with former President Trump in 2020.
The event will air from St. Anselm College in New Hampshire, the same location as CNN's contentious town hall event with former President Donald Trump.
After a report that nine Fox News employees have departed the company to follow Tucker Carlson was unveiled, Newsmax host Eric Bolling wasn't surprised.
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"Maybe you're a little bit irked by a couple of questions, but your overall sense was that you got a fair shake...I think that if I can get to that point, then that's a good thing."
The interview was contentious at times, with Trump mocking the decline of Fox News in the ratings to Baier, while Baier fact-checked Trump's claims about the 2020 election being "stolen" from him.