Billionaire Donald Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE leads the crowded 2016 Republican presidential field in California, according to a poll released Sunday morning.

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The USC Dornsife/LA Times Poll found that 24 percent of Republicans said they would support Trump.

Retired pediatric neurosurgeon 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 is in second place with 18 percent.

Former Florida Gov. Jeb Bush and Sen. Ted Cruz Rafael (Ted) Edward CruzThe Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy Murkowski: Supreme Court nominee should not be taken up before election Battle lines drawn on precedent in Supreme Court fight MORE (Texas) each received 6 percent support.

Pollsters found that Carson would beat Trump in a head-to-head matchup, however, 43 percent to 32 percent.

"More than half of the Republican primary voters who have chosen a candidate are supporting someone who has never held elected office," Dan Schnur, director of the USC Dornsife/Los Angeles Times Poll and director of the Unruh Institute of Politics of USC, said.

"Sheer anger toward Washington is handily defeating ideology in the Republican primary," he added.

Pollsters also found former Secretary of State Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE atop the Democratic field, with 42 percent support.

Twenty six percent said they would back Sen. Bernie Sanders Bernie SandersJacobin editor: Primarying Schumer would force him to fight Trump's SCOTUS nominee Trump campaign plays up Biden's skills ahead of Cleveland debate: 'He's actually quite good' Young voters backing Biden by 2:1 margin: poll MORE (I-Vt.).

Vice President Joe Biden Joe BidenJoe Biden looks to expand election battleground into Trump country Trump puts Supreme Court fight at center of Ohio rally Special counsel investigating DeVos for potential Hatch Act violation: report MORE grabbed support from 11 percent of respondents when his name was added to the field.

"Clinton is holding up pretty well," said Drew Lieberman, vice president of Democratic polling firm Greenberg Quinlan Rosner, which helped conduct the USC Dornsife/Los Angeles Times Poll. "What you see going on here is that she has very solid coalition of moderate-type Democrats plus non-white voters that someone like Sanders or anybody from her left flank would have to overcome in order to cut into her vote share."