Former Massachusetts Gov. Mitt Romney has won Nevada's Republican presidential caucuses. Former House Speaker Newt Gingrich and Texas Rep. Ron Paul remain in a tight race for second, with former Pennsylvania Sen. Rick Santorum finishing last.
Returns from all but five of Nevada's 17 counties show Romney with 41 percent, Gingrich with 25 percent, Paul with 22 percent and Santorum with 13 percent. No votes have been reported yet from Clark and Washoe Counties, which are expected to account for about three-quarters of the total vote.