Relatively low turnout. Disproportionately Mormon. Thus, polling samples were skewed. No different than undercounting evangelicals when determining the Huckster’s early support in Iowa.
Except that Mormon were 25% of the vote in Nevada while evangelicals were 60% of the vote in Iowa.
Actually it was extremely HIGH turnout, not low turnout. But that itself throws things off.
The really funny poll though was the last ARG poll in South Carolina. Usually they adjust their last poll to be closer to accurate, to hide that they seem to use their previous polls to push their candidate.
But this time, it was just wrong, showing wild movement in a 2-day period that if correct should have resulted in a much different result.
That's probably true. Vegas for sure is Mormon country.