He has worked for four TV network news divisions. He has worked at a CBS Chicago TV station, NBC News, ABC, and of course Fox News https://www.latimes.com/entertainment-arts/business/story/2020-09-28/who-is-chris-wallace-presidential-debate-moderator-fox-news
He has a reputation as one of the toughest interrogators in TV news. For instance, Wallace asked Russian president Vladimir Putin in 2018 why so many of his political opponents ended up dead. https://www.latimes.com/entertainment-arts/business/story/2020-09-28/who-is-chris-wallace-presidential-debate-moderator-fox-news
Here's more information on Wallace, including which party he is a registered voter for: https://www.latimes.com/entertainment-arts/business/story/2020-09-28/who-is-chris-wallace-presidential-debate-moderator-fox-news
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