Trump up big in Nevada
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Republican presidential front-runner Donald TrumpDonald John TrumpShocking summit with Putin caps off Trump’s turbulent Europe trip GOP lambasts Trump over performance in Helsinki Trump stuns the world at Putin summit MORE holds a commanding lead in the party’s Feb. 23 Nevada caucuses, according to a CNN/ORC poll released on Wednesday. 

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Trump has 45 percent support, followed by 19 percent who said they are backing Sen. Marco RubioMarco Antonio RubioRubio: Trump's remarks on Russian election meddling 'not accurate' The Hill's Morning Report — Trump, Putin meet under cloud of Mueller’s Russia indictments Scottish beer company offering ‘tiny cans’ for Trump’s ‘tiny hands’ MORE (R-Fla.), 17 percent who are backing Sen. Ted CruzRafael (Ted) Edward CruzWisconsin GOP Senate candidate rips his own parents for donations to Dems The Memo: Trump leaves chaos in his wake in UK Beto O'Rourke is dominating Ted Cruz in enthusiasm and fundraising — but he's still headed for defeat MORE (R-Texas) and 7 percent who are backing retired neurosurgeon Ben Carson.

Ohio Gov. John Kasich (R) comes in fifth, with 5 percent support, followed by former Florida Gov. Jeb Bush, with 1 percent support.

Forty-one percent of caucusgoers say they are still deciding who they will support in the race.

Trump is up in the poll by 7 points since October, while Rubio gained 12 points and Cruz 13.

The billionaire businessman is seen as the best candidate by overwhelming margins to handle the economy and curb illegal immigration, according to respondents.

He is also the favorite candidate in terms of foreign policy and on social issues like gay marriage and abortion.

Thirty-five percent of respondents said Trump best represents conservative values, compared to 22 percent for Cruz and 20 percent for Rubio.

The CNN/ORC poll surveyed 245 likely Republican caucus voters from Feb. 10-15. It has a margin of error of 6.5 percent.