Marco Rubio snags South Carolina Sen. Tim Scott's endorsement after Iowa caucus

The Path to Victory: Marco Rubio

Sen. Marco Rubio scored a key endorsement on Tuesday as South Carolina Sen. Tim Scott gave the Republican presidential hopeful his backing.

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In a video posted to Rubio's YouTube page, Scott said the Republican party has "one shot" to beat Hillary Clinton in 2016 and "that shot is Marco Rubio."

"I'm putting my confidence and trust in Marco Rubio because I believe he takes us to that better future," Scott said.

Rubio finished third, but performed far better than most polls have shown, coming in just one point behind Donald Trump and just five points behind winner Ted Cruz in the final tally.

The finish has handed Rubio a burst of momentum heading into the weeklong-sprint toward the New Hampshire nomination.

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