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At a Ted Cruz campaign event in Miami this morning, Carly Fiorina officially endorsed the Texas senator for president.

"I checked the box for Ted Cruz," Fiorina said to cheers from the crowd.

She explained that Cruz is "a fearless constitutional conservative" who has fought for the Second Amendment and religious freedom.

"And he has won, over and over and over."

She said that she is "kind of horrified" by GOP front-runner Donald Trump, and she believes Cruz is the only candidate left who can beat him at the ballot box.

See some of the Twitter reaction to Fiorina's endorsement below:

Watch more above and hear from Sen. Ted Cruz for the full hour, tonight at 9:00pm ET on "The Kelly File."

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