WATCH LIVE: Nikki Haley to Officially Endorse Marco Rubio

South Carolina Governor Nikki Haley is set to officially endorse Marco Rubio at a press conference soon.

The endorsement is a pretty significant one just three days before the South Carolina Republican primary. Donald Trump is currently in first place, but this endorsement may give Rubio a needed boost to end up with a stronger showing.

Watch live below, via NBC News:

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