In a state where only 33,000 of the state's 400,000 GOP voters turned out to caucus in 2012—a mere 7%—the campaigns of Ted Cruz, Marco Rubio and one-time candidate Jeb Bush got organized early, snapping up talented operatives and key endorsements, while beginning caucus trainings last fall in the hopes that a strong organization could overcome Trump's momentum.

But Trump appears to have steamrolled through all of that, dominating not just Nevada's unreliable polls, but capturing the excitement and buzz in the race with his visits here. In interviews with dozens of Republican voters across the state over the last week, many said without hesitation that they were standing firmly with Trump and had given little thought to the other Republican candidates.