Nevada, S. Carolina primaries to open

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The latest polls show Clinton holds a narrow five-point lead on Obama in Nevada.

Republicans will also hold a contest in Nevada on Saturday.

But the Nevada race has drawn less attention from Republican candidates.

Instead, they're focusing on South Carolina, the first primary in the South, also scheduled on Saturday.

In South Carolina, polls show Republican John McCain maintains a steady seven-point edge on Mike Huckabee.

Editor:Liu Fang