Mitt Romney has won Nevada's Republican caucuses, early results from the western US state suggest.
Voting in most areas finished early on Saturday evening, but Clark County, which includes Las Vegas, held an evening caucus to allow observant Jews to participate.
The BBC reports Mitt Romney has declared victory, with nearly half the votes counted, he has polled 42%.
The former Massachusetts governor won convincingly in Florida on Tuesday.
He has won two out of the four contests already held this year, Florida and New Hampshire, and came second in Iowa.
His main challenger, former congressman Newt Gingrich, is trailing in second place with about 26%.
Nevada, which has a faltering economy and a big Mormon population, is friendly territory for Mr Romney who is a Mormon and former head of a private equity firm.
He captured 51% of the vote in 2008 to win the state during his failed 2008 presidential bid.
Colorado, Minnesota and Missouri will have nominating contests on Tuesday. Maine will wrap up its weeklong caucuses next Saturday, and Arizona and Michigan hold contests on 28 February.