O'Reilly: Media Ignoring 'Pernicious, Far-Left' Group Behind Trump Protest

'Be Careful, Bernie': Trump Warns Sanders to Stop 'Lying' About Protesters

UPDATE: The March 21 GOP debate has been cancelled after Donald Trump said he would not participate, prompting John Kasich to also drop out.

Fox News Channel will host its fourth Republican presidential debate in Salt Lake City, Utah, on Monday, March 21.

The two-hour debate will take place at the Salt Palace Convention Center, starting at 9:00pm ET, with Bret Baier, Megyn Kelly and Chris Wallace returning as moderators.

All remaining candidates in the primary race will be invited to participate in the debate, which gives voters in Arizona and Utah one last chance to hear from the Republican contenders before they go to the polls on March 22.

Fox News Channel’s three previous primary debates delivered the three highest-rated telecasts in the network’s history.

The August 6 debate delivered a record-breaking 24 million viewers and remains the highest-rated non-sports cable broadcast of all time. Additionally, the network’s most recent debate on March 3 in Detroit delivered the highest ratings for a debate in 2016.

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