This poll never gets it right:
Donald Trump’s Lead Slashed in South Carolina
http://www.nbcnews.com/politics/2016-election/donald-trump-s-lead-slashed-south-carolina-poll-n521101
Boom you nailed it!
http://www.nbcnews.com/meet-the-press/surprise-trump-falls-behind-cruz-national-nbc-wsj-poll-n520296