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 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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 Judge Jeanine to Trump Protesters: 'The Silent Majority Will Not Be Silenced' ||||| Republican presidential front-runner Donald Trump Donald John TrumpHouse Republicans push Mulvaney, Trump to rescind Gateway funds Pruitt spent K flying aides to Australia to prep for later-canceled visit: report Rosenstein told Trump he is not a target of Mueller probe: report MORE mocked Fox News anchor Megyn Kelly on Tuesday, calling her "Crazy Megyn." 
 
 "@SCNAK45: @megynkelly is trying so hard to bash @realDonaldTrump it's ridiculous" Don't worry, everyone is wise to Crazy Megyn! — Donald J. Trump (@realDonaldTrump) March 15, 2016 
 
 The real estate mogul quoted someone in his tweet who was apparently complaining about Kelly's coverage of Trump as election results came in Tuesday night. And then he added another tweet. 
 
 Can't watch Crazy Megyn anymore. Talks about me at 43% but never mentions that there are four people in race. With two people, big & over! — Donald J. Trump (@realDonaldTrump) March 16, 2016 
 
 Trump and Kelly have had a tense relationship ever since the first Republican debate, in August last year, when Kelly pressed him about derogatory comments he's made about women. 
 
 Trump later demanded that she pull out of a debate ahead of the Iowa caucuses. After Fox News responded by releasing a statement that mocked Trump for worrying about her tough questions, the business mogul skipped the debate. ||||| GOP debate canceled after Trump, Kasich pull out 'I think it's enough,' Trump says about the primetime debates. 
 
 Monday's Republican presidential primary debate has been canceled after GOP front-runner Donald Trump declined to participate, citing a scheduling conflict. 
 
 "On Feb. 20, the Republican National Committee announced that a GOP presidential primary debate would be held on March 21 in Salt Lake City. They offered that debate to Fox News Channel to host, provided there were enough candidates actively campaigning," Fox News Executive Vice President Michael Clemente said in a statement. 
 
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 "This morning, Donald Trump announced he would not be participating in the debate. Shortly afterward, John Kasich's campaign announced that without Trump at the debate, Kasich would not participate. Ted Cruz has expressed a willingness to debate Trump or Kasich — or both. But obviously, there needs to be more than one participant. So the Salt Lake City debate is cancelled," Clemente said. 
 
 Trump said earlier on Wednesday that he was scheduled to speak at a conference of the pro-Israel lobbying group AIPAC, and would be skipping the Utah debate. 
 
 “Nobody told me about debates. As you saw, I thought the last debate on CNN was the last debate," he said on "Fox & Friends" Wednesday morning. 
 
 “I’m doing a major speech in front of a very important group of people that night," Trump said, adding that it had been "scheduled a while ago." 
 
 "I think it's enough," he added, about the dozen debates the Republican candidates have participated in so far. 
 
 But during an interview on stage directly after CNN's debate last week, Trump acknowledged there were more debates planned and seemed more open to participating. He told anchor Chris Cuomo, "I think they want to do two more debates, and I guess I’m pretty much OK with it," though he added he's "had enough" of the debates. 
 
 Sean Spicer, the Republican National Committee's chief strategist, had initially confirmed on Wednesday morning that the debate would go on even without Trump on stage. 
 
 But then Ohio Gov. John Kasich's campaign declared that he wouldn't appear without Trump, forgoing the opportunity to debate Texas Sen. Ted Cruz one-on-one. 
 
 "Donald Trump's decision to scuttle the Salt Lake City debate is disappointing, but not surprising. His values are out of step with the people of Utah," Kasich's chief strategist John Weaver said on Wednesday. "We had hoped to contrast Governor Kasich's positive inclusive approach to problem solving with Trump's campaign of division. If he changes his mind, we will be there." 
 
 The debate had been scheduled for the day before nominating contests in Arizona and Utah. 
 
 Trump's announcement aome after he scored a big win on Florida on Tuesday night, knocking Marco Rubio out of the race. But he failed to clinch Ohio, potentially setting the GOP on the path for a brokered convention, with Cruz and Kasich still vying for the nomination. 
 
 The real estate mogul has been flirting for days with skipping the upcoming debate, which the RNC had set on Feb. 20. Trump had called last Thursday's debate hosted by CNN "a really nice way to finish off the debate season" and said he was not aware of other upcoming showdowns. 
 
 While it's not clear if Trump can reach the 1,237 delegates needed to secure the nomination, he has called on the GOP to unite behind him so that he can take on Hillary Clinton in the general election. 
 
 This wouldn't be the first time Trump has skipped a debate. He boycotted the Fox News showdown in Iowa in January, following a feud with Fox News host Megyn Kelly, and subsequently lost the state to Cruz. Trump later said that skipping the debate could have cost him the win.
– The front-runner will once again be absent: Donald Trump says he's skipping Fox News' GOP debate in Salt Lake City on Monday because nobody told him about it, per Politico. Trump is already scheduled to speak at a conference of the pro-Israel lobby AIPAC, and he says there have been "enough" debates already. Or perhaps he's just had enough of Megyn Kelly, who will return as one of three moderators, reports Fox News Insider. Trump tweeted Tuesday that Kelly is "trying so hard to bash" him, reports the Hill. "Can't watch Crazy Megyn anymore," he added.