Republican presidential front-runner Donald TrumpDonald John TrumpSchiff urges GOP colleagues to share private concerns about Trump publicly US-China trade talks draw criticism for lack of women in pictures Overnight Defense: Trump to leave 200 troops in Syria | Trump, Kim plan one-on-one meeting | Pentagon asks DHS to justify moving funds for border wall MORE is sending a warning to GOP leaders about his dominance in the polls: “You’ve got to get used to it.” 

During an interview with Fox News’s Chris Wallace, the billionaire said Republicans are “kidding themselves” if they think he won’t secure the GOP nomination. 

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“I say, folks, you know, I’m sorry I did this to you, but you’ve got to get used to it,” Trump said. “It’s one of those little problems in life.” 

“I’m going to win. ... You know, I’m not one of these other guys that goes down. I don’t go down. I go up.”  

Trump’s interview with Wallace is set to air Sunday at 6 p.m.