Mitt Romney has added to his lead in the race for delegates with a big win in the Nevada Republican presidential caucuses.

Romney won at least 10 delegates in Saturday's contest, with eight delegates still to be determined. Newt Gingrich won at least four delegates, Ron Paul won at least three and Rick Santorum won at least two.

Nevada awarded delegates in proportion to the statewide vote.

Romney has a total of 97 delegates to the party's national convention, including endorsements from Republican National Committee members who will automatically attend the convention and can support any candidate they choose.

Gingrich has 30, Santorum has 16 and Paul has seven. It will take 1,144 delegates to win the Republican nomination for president.

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Former Massachusetts Gov. Mitt Romney has taken an imposing lead in Nevada's Republican presidential caucuses. Former House Speaker Newt Gingrich and Texas Rep. Ron Paul are battling for second, with former Pennsylvania Sen. Rick Santorum trailing.

Returns from 11 of Nevada's 17 counties show Romney with 39 percent, Gingrich with 25 percent, Paul with 22 percent, and Santorum with 13 percent. No results have been reported yet from Clark County, which is expected to account for more than half the total vote.

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