Donald Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE has captured a double-digit lead in the first voting state of Iowa a little over a week before the caucuses there, according to a CNN/ORC poll released Thursday.

Trump is supported by 37 percent of likely GOP voters in the Hawkeye State, followed by Ted Cruz Rafael (Ted) Edward CruzLoeffler calls for hearing in wake of Netflix's 'Cuties' Health care in the crosshairs with new Trump Supreme Court list 'Parks and Rec' cast members hosting special reunion to raise money for Wisconsin Democrats MORE, at 26 percent, and Marco Rubio Marco Antonio RubioFlorida senators pushing to keep Daylight Savings Time during pandemic Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll Intelligence chief says Congress will get some in-person election security briefings MORE at 14 percent.

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That represents at least a 3-point rise for each of those candidates from the same survey conducted in late November and early December.

All other candidates remain in single digits in the latest survey, with Ben Carson Benjamin (Ben) Solomon CarsonBiden cannot keep letting Trump set the agenda The Hill's 12:30 Report: Trump heads to New Hampshire after renomination speech Five takeaways on GOP's norm-breaking convention MORE at 6 percent, Jeb Bush at 3 percent, Mike Huckabee at 3 percent and Rand Paul Randal (Rand) Howard PaulSecond GOP senator to quarantine after exposure to coronavirus GOP senator to quarantine after coronavirus exposure The Hill's Morning Report - Sponsored by National Industries for the Blind - Trump seeks to flip 'Rage' narrative; Dems block COVID-19 bill MORE at 2 percent.

Trump has been battling Cruz for the past two weeks for support in Iowa.

This week Trump unveiled an endorsement from former 2008 Republican vice presidential candidate Sarah Palin, who campaigned with him in Des Moines. Iowa Gov. Terry Branstad also called for the Texas senator to be defeated.

While Cruz was considered a month ago to be a favorite to win the Feb. 1 caucuses in Iowa, several recent polls have indicated a much tighter race between him and Trump there.

The pair have battled for the support of evangelical voters.

The CNN/ORC poll of 266 likely GOP caucus-goers was conducted Jan. 15–20 via telephones with a margin of error of 6 percentage points.

Three recent polls in the state have shown more malleability in the race between the two front-runners, with one finding Cruz with a 2-point edge and two others putting Trump up by either 1 point or 6 points.

Nearly half of respondents in the latest CNN/ORC poll, 49 percent, said they have "definitely decided" on a candidate, while 22 percent are leaning toward one and 28 percent are undecided.