BBC: Hillary Clinton has won a fiercely contested election in the US state of Nevada, according to projections based on 88% of the vote count.
Preliminary figures show Mrs Clinton with 51% of the vote, to 45% for Barack Obama. Both candidates have fought hard to win the support of Latino voters.
US TV networks project a big win in the state for Republican Mitt Romney.
The party's contest in Nevada has been overshadowed by a closely-fought primary being held in South Carolina.
Voting continues in the first southern state to hold a primary, where Republicans John McCain and Mike Huckabee, who appear to be the frontrunners in a very tight race, have focused their efforts.
But a win in Nevada for Mr Romney, the former governor of Massachusetts, could give him a useful boost going into the next primary vote in Florida. Clinto wins tight Nevada caucus >>>
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