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 TrumpNearly 13,000 late-term abortions annually is a national disgrace Republican opposition to raising the minimum wage Is crumbling GOP senator: 'Highly unlikely’ voter fraud sways election 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 RubioRepublicans, it's time to stop asking 'What would Reagan do?' Obama: Trump's rigged election talk 'not a joking matter' Obama: Trump and Putin have a 'bromance' 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.