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"......Anyway, the factional nature of Trump's support reveals itself when you start looking at the overall vote totals and percentages. He's now at 31.9% of the popular vote, a strong lead by traditional standards but still a ways from the 45% level where frontrunners start to pull away, and the sooner the last two candidates stuck in single digits (Kasich and Carson) face reality, the sooner Rubio and/or Cruz can start consolidating the two-thirds of GOP voters who have yet to follow his flag:

Trump got crushed with the 37% of voters looking for a "shares my values" candidate (Cruz-Rubio-Trump 37-27-8), and the 15% who wanted a "win in November" candidate (Rubio-Trump-Cruz 47-21-17), so those are the pitches that are working best against him (note that this is a much better result on 'electability' for Rubio than in New Hampshire or Iowa); where both Cruz and Rubio need to work at Trump is the 31% of "can bring needed change" voters, who went 45-19-16 Trump-Cruz-Rubio.

While Trump's win looks big, it's actually the second-smallest margin of victory ever in the South Carolina Republican primary (to McCain in 2008) and the smallest percentage of the vote for a winner, and Trump got fewer actual votes than Newt Gingrich did in 2012 or McCain in a losing effort in 2000:".............................. Source