New Polls!
A slew of them today, from Quinnipiac, CNN and ARG.
Nevada -- Dems (CNN)
Clinton 48
Sanders 47
Ruh-roh! Looks like the previous Nevada poll (which was understandably dubious) that showed Nevada as a dead heat isn't such an outlier after all. The caucus is only three days away.
South Carolina -- GOP
There's several polls in the last two days, so we'll just cover the aggregate score:
Trump 35
Cruz 17.5
Rubio 15.8
Bush 10.3
Kasich 9.0
Carson 5.8
There's a fair bit of variability in the #4 track. Bush scores anywhere from 7 to 15% and Kasich from 4 to 14%.
Trump, Cruz and Rubio are more consistent (33-38, 14-22 and 14-18, respectively). Trump wins every poll, Cruz places 2nd in all but the ARG poll, and Rubio places 3rd in all but the ARG poll, where he places 2nd. Should be noted that the ARG poll actually has Kasich tied for 3rd with 14%, so it may be something of an outlier. Again, the primary is in three days.
South Carolina -- Dem
Aggregate has Clinton with a 21.1-point lead on Sanders. Most polls have her a bit lower than that (+18 to +21) but it's skewed out by an ARG poll that shows Clinton at +30. I'm not a fan of ARG, because their results seem to be outliers compared to other polls, and they don't publish crosstabs. Would like to see 538 do another ranking of pollsters and see where they fit.
Nevada -- GOP (CNN)
Trump 45
Rubio 19
Cruz 17
Kasich 7
Carson 5
Bush 1
Makes sense that Trump would poll well in Nevada -- he's got a major presence in Vegas. Though 45% is....YUUUGE.
Bush at 1% is just sad. When you're sub-Carson, that's a warning sign.
EDIT: Found it...538 gave them a C-, and in another article in 2012 stated that ARG had "long been unreliable". So take those results with a block of salt.