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New CNN polls: Trump, Clinton hold big leads in S.C.
03:50 - Source: CNN

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A survey out Friday has Donald Trump at 28% to Ted Cruz's 23% among South Carolina Republicans

That lead of Trump over Cruz is narrower than other polls have shown in recent days

South Carolina Republicans vote in their primary on Saturday

CNN  — 

Though Donald Trump continues to lead heading in to South Carolina’s primary Saturday, a new poll suggests his support could be fading in the campaign’s final days.

According to the NBC News/Wall Street Journal/Marist survey released Friday, the billionaire businessman leads the Republican race in the Palmetto State with 28% support. Texas Sen. Ted Cruz is in second at 23%.

Trump’s lead is narrower than other polls of South Carolina Republicans have shown. A CNN poll of polls from Thursday had the average Trump lead over Cruz in recent polls at 16 percentage points, and a Fox News poll conducted on the same days as the NBC/WSJ/Marist poll found Trump up 13 percentage points over Cruz.

In Friday’s poll, Rubio trails in third with 15%, just ahead of Jeb Bush at 13%. John Kasich and Ben Carson are tied with 9%.

While the GOP race can be cleaved into three clear tiers in South Carolina, the Democratic side is more lopsided. Hillary Clinton leads Bernie Sanders 60% to 32% among likely Democratic voters in the state.

The CNN poll of polls for Democrats in South Carolina also showed a significant Clinton lead, though smaller: 56% to 32%.

The WSJ/NBC News poll surveyed 722 likely Republican voters and 425 likely Democratic voters, with a margin of error of plus or minus 3.6% for the Republicans, and plus or minus 4.8% for Democrats. The poll was conducted between February 15 and 17.

CNN’s Jennifer Agiesta contributed to this story.