Carson endorses Trump

(NBC News) Former presidential candidate Ben Carson is throwing his support behind Donald Trump.

"It’s not about Mr. Trump, it’s about America," Carson said.

Carson is just the latest political star realigning ahead of next week’s big primaries in Ohio and Florida, where upsets by Governor Ted Kasich and Senator Marco Rubio could cost Trump enough delegates to force a brokered convention.

Ted Cruz, now backed by Carly Fiorina, is trying to consolidate the "Stop Trump" vote.

"Join our team. We welcome you. Come on in. The water’s fine," Cruz urged potential voters.

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