Nikki Haley baffled by Christie endorsement
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South Carolina Gov. Nikki Haley (R) on Sunday blasted New Jersey Gov. Chris Christie (R) for his surprising endorsement of GOP front-runner Donald TrumpDonald John TrumpImpeachment? Not so fast without missing element of criminal intent Feds say marijuana ties could prevent immigrants from getting US citizenship Trump approval drops to 2019 low after Mueller report's release: poll MORE just before Super Tuesday.

“Chris is a dear friend, but none of us understand why he did this,” Haley told host George Stephanopoulos Sunday on ABC's "This Week." 

Haley, who has endorsed Trump’s GOP rival Sen. Marco RubioMarco Antonio RubioFreedom to Compete Act would benefit many American workers Booker, Harris have missed most Senate votes Dems say attorney general undermined credibility with Trump talking point MORE (R-Fla.), is seen as a powerful figure in the Republican Party.

Christie’s unexpected endorsement of Trump, just days before Super Tuesday, added a disruptive element to the already unpredictable 2016 contest. 

When asked about the idea of Trump securing the nomination, Haley said, “It’s scary.”

“I think what he’ll do to the Republican Party is make us question who we are and what we’re about,” she said.