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Charles Krauthammer said on The Kelly File that the continuing "cannibalism" within the Republican Party is only helping Donald Trump.

He was asked by Megyn Kelly whether a "brokered" GOP convention could occur this summer if no candidate wins enough delegates.

Krauthammer sees this scenario as "fairly unlikely," though some of the trailing candidates are holding out hope.  

He pointed out that it's taking too long for one of the so-called "mainstream" candidates, like Marco Rubio, Jeb Bush or John Kasich, to emerge alongside Trump and Ted Cruz.

"What they don't seem to understand is ... by the time this one person supposedly emerges, it will be over and Trump will have swept the field or perhaps Cruz will have come to be the one challenger who wins," he explained.

Krauthammer said the attacks on each other among the more moderate candidates amount to "cannibalism" within the party.  

He added that if Trump wins South Carolina by a decisive margin, then he could run the table unless the field quickly shrinks to one or two challengers.

Watch his full analysis above and check out a Kelly File special, "The Road to South Carolina," tonight at 9p/12a ET on Fox News Channel.

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