Donald Trump arrives at a rally in Las Vegas, Nevada, Feb. 22, 2016.
Donald Trump supporters cheer at a rally in Las Vegas, Nevada, Feb. 22, 2016.
A protester is removed from a rally in Las Vegas, Nevada, as Donald Trump tells the crowd, "I'd like to punch him in the face, I'll tell you.", Feb. 22, 2016.
Two girls sit at rally for Marco Rubio in Las Vegas, Nevada, Feb. 21, 2016.
Marco Rubio speaks at a rally in Las Vegas, Nevada, Feb. 21, 2016.
Voters wait to caucus at the Democratic Caucus at the East Las Vegas Community Center, Feb. 20, 2016.
Voters wait to caucus at the Democratic Caucus at the East Las Vegas Community Center, Feb. 20, 2016.
Voters wait in line at the Democratic Caucus at the East Las Vegas Community Center, Feb. 20, 2016.
Bernie Sanders speaks to supporters at a rally in Henderson, Nevada, Feb. 20, 2016.
A Bernie Sanders supporter listens to speakers at a Sanders rally in Henderson, NV, Feb. 19, 2016.
Ted Cruz supporters buy fan-wear at a rally in Las Vegas, Nevada, Feb. 22, 2016.
Ted Cruz supporters listen to speakers at a rally in Pahrump, Nevada, Feb. 21, 2016.
A man dressed as Elvis attends Donald Trump's Caucus Watch Party at Treasure Island Ballroom in Las Vegas, Nevada, Feb. 23, 2016.
Hillary Clinton speaks to supporters at a rally in East Las Vegas, Nevada, Feb. 18, 2016.
Supporters attend Donald Trump's Caucus Watch Party at Treasure Island Ballroom in Las Vegas, Nevada, Feb. 23, 2016.
Donald Trump supporters wait for the candidate to speak at South Point Arena in Las Vegas, Nevada, on the evening before the Republican Caucus.