The all-important "First in the South" Republican primary has arrived. As the results come in, experts and voters are buzzing on the Twittersphere.
Only four candidates remain, and the results of the South Carolina primary could narrow the field even further. Mitt Romney goes into the Palmetto State with a New Hampshire victory under his belt, while Rick Santorum's campaign was boosted this week after a final count revealed that Santorum had in fact won the Iowa caucus. Meanwhile, Newt Gingrich has surged to the top of the polls in South Carolina.
We've put together a snapshot of what people are talking about on Twitter, and we'll update it throughout the night.
UPDATE: Former House Speaker Newt Gingrich was projected the winner of South Carolina's primary election on Saturday by MSNBC.
Watch as the reactions roll in: