Rep. Ron Paul (R-Texas), who has staked his presidential campaign on winning delegates in caucus states, came in third with 4,619 votes, or 19 percent, while former Sen. Rick Santorum (R-Pa.) was in fourth place with 2,749 votes, or 11 percent.
Nevada will award its 28 delegates proportionally. Five other states will hold nominating contests this month.
Vice President Joe Biden waits to conduct a mock swearing-in ceremony with Sen. Brian Schatz, D-Hawaii, in the Capitol's Old Senate Chamber, December 2, 2014. Schatz was sworn in to serve the remainder of his term since he was appointed to the seat after Sen. Daniel Inouye, D-Hawaii, passed away.