New poll finds Cruz narrowing Trump's SC lead
© Greg Nash

An NBC News/Wall Street Journal/Marist poll released Friday finds Donald TrumpDonald John Trump20 weeks out from midterms, Dems and GOP brace for surprises Sessions responds to Nazi comparisons: 'They were keeping the Jews from leaving' Kim Jong Un to visit Beijing this week MORE leading the GOP presidential field by only 5 points in South Carolina, down from 16 points a month ago.

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The RealClearPolitics average of polls still finds Trump ahead of the pack by double digits going into Saturday’s South Carolina primary, but Friday’s survey reports Trump has 28 percent support among likely Republican voters, down from 36 percent in January. Ted CruzRafael (Ted) Edward CruzMcCain calls on Trump to rescind family separation policy: It's 'an affront to the decency of the American people' Cruz announces bill to end separation of immigrant families The Hill's 12:30 Report — Sponsored by Delta Air Lines — Furor grows over child separation policy MORE, Trump's nearest rival, gets 23 percent, up from 20 last month.

Trump and Cruz are followed by Marco RubioMarco Antonio RubioHillicon Valley: Supreme Court takes up Apple case | Senate votes to block ZTE deal | Officials testify on Clinton probe report | Russia's threat to undersea cables | Trump tells Pentagon to create 'space force' | FCC begins T-Mobile, Sprint deal review Feehery: Betting on Trump Senate votes to block Trump's ZTE deal MORE, with 15 percent; Jeb Bush, at 13 percent; and John Kasich and Ben CarsonBenjamin (Ben) Solomon CarsonPress: Drain the swamp – of Scott Pruitt An ode to fathers Ben Carson walks back plan to triple rent for poor MORE tied, at 9 percent.

Cruz leads Trump among self-identified Tea Party supporters, 35 percent to 31 percent. No other candidate registers above Rubio’s 13 percent support among the Tea Party.

However, only 8 percent of Trump supporters report they “might vote differently” on Saturday, compared to 15 percent of those backing Rubio and Cruz and 22 percent of Bush backers.

Trump is looking to build on his momentum Saturday after a decisive win in the New Hampshire primary earlier this month.