At a Donald Trump rally in Las Vegas last October, a Colombian emigrant named Myriam Witcher walked out onto the stage, her black ponytail swinging. She clutched a tiny American flag and a copy of People magazine with the billionaire Republican front-runner featured on the cover. “I’m Hispanic, and I vote for Mr. Trump!” she cried. “We love you, all the way to the White House!”

Donald Trump ran the table in Nevada on Tuesday night, winning nearly 46 percent of the vote to pick up his third win in a row. He won across a variety of subgroups — including Hispanics — which now begs the question: Can anyone halt his march to the nomination?

Sam’s Town casino is a pioneer-themed resort on the working-class east side of Las Vegas famous for its laserlight waterfall show, budget-friendly gambling, a bowling alley popular with locals, and the fact that Republican presidential candidate Marco Rubio’s father, Mario Rubio, served drinks here in the early 1980s.