Biden, Sanders top 2020 Democratic field in Nevada poll

Sen. Bernie SandersBernie SandersSanders seeks spark from Ocasio-Cortez at Queens rally On The Money: Supreme Court takes up challenge to CFPB | Warren's surge brings scrutiny to wealth tax | Senators eye curbs on Trump emergency powers Biden seeks to fundraise off fact he's running out of money MORE (I-Vt.) and former Vice President Joe BidenJoe BidenTrump knocks Romney as 'Democrat secret asset' in new video Giuliani asked State Dept. to grant visa for ex-Ukraine official at center of Biden allegations: report Perry won't comply with subpoena in impeachment inquiry MORE sit atop the 2020 Democratic presidential field in a new poll of likely Nevada caucusgoers. 

The Emerson College poll shows Biden, who is expected to announce his campaign in the coming weeks, with 26 percent support among caucusgoers, while 23 percent back Sanders.

Sen. Elizabeth WarrenElizabeth Ann WarrenHillicon Valley: GOP lawmakers offer election security measure | FTC Dem worries government is 'captured' by Big Tech | Lawmakers condemn Apple over Hong Kong censorship Sanders seeks spark from Ocasio-Cortez at Queens rally On The Money: Supreme Court takes up challenge to CFPB | Warren's surge brings scrutiny to wealth tax | Senators eye curbs on Trump emergency powers MORE (D-Mass.) and former Rep. Beto O'RourkeBeto O'RourkeSuper PAC seeks to spend more than million supporting Yang Krystal Ball rips media for going 'all-in' on Buttigieg's debate performance The Hill's Campaign Report: Biden camp faces new challenges MORE (D-Texas) are the only other candidates who have double-digit support in the poll, with 10 percent each.

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They are followed by Sen. Kamala HarrisKamala Devi HarrisHarris campaign releases web video highlighting opposition to death penalty Sanders seeks spark from Ocasio-Cortez at Queens rally Biden seeks to fundraise off fact he's running out of money MORE (D-Calif.) at 9 percent, Sound Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegSanders seeks spark from Ocasio-Cortez at Queens rally Biden seeks to fundraise off fact he's running out of money Biden struggles to reverse fall MORE at 5 percent and entrepreneur Andrew YangAndrew YangSuper PAC seeks to spend more than million supporting Yang The Hill's Campaign Report: Biden camp faces new challenges Private flight spending soars in Democratic presidential race MORE at 3 percent.

Nevada is expected to be the third major nominating contest in the Democratic presidential primaries following the Iowa caucuses and New Hampshire primary. National polls and polls of voters in Iowa and New Hampshire also have consistently shown Biden and Sanders at the top of the field. 

The Emerson College poll also shows President TrumpDonald John TrumpFlorida GOP lawmaker says he's 'thinking' about impeachment Democrats introduce 'THUG Act' to block funding for G-7 at Trump resort Kurdish group PKK pens open letter rebuking Trump's comparison to ISIS MORE edging out most of the leading Democratic candidates in Nevada, but Biden has a 4-point advantage over the president.

The new poll's results are based on interviews with 719 registered voters from March 28 through March 30. The margin of error is 3.6 percentage points.