Former Vice President Joe Biden Joe BidenBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Harris faces pivotal moment with Supreme Court battle MORE is holding firm atop the Democratic presidential field, leading Vermont Sen. Bernie Sanders Bernie SandersOutrage erupts over Breonna Taylor grand jury ruling Dimon: Wealth tax 'almost impossible to do' Grand jury charges no officers in Breonna Taylor death MORE (I) by 8 points in a new national poll.

The Morning Consult survey finds Biden with 31 percent support, followed by Sanders at 23 percent. There has been little change from the same poll conducted last month, which found Biden with a 33 percent to 25 percent lead.

An Emerson University survey released on Monday found Sanders with a 5-point lead over Biden, but every other recent poll has the former vice president in the top spot.

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No other candidate reached double-digit support in the Morning Consult survey.

Sen. Kamala Harris Kamala HarrisHarris faces pivotal moment with Supreme Court battle Nearly 40 Democratic senators call for climate change questions in debates Joe Biden has long forgotten North Carolina: Today's visit is too late MORE (D-Calif.) is in third place with 9 percent support, followed by former Rep. Beto O’Rourke (Texas) at 8 percent. Sen. Elizabeth Warren Elizabeth WarrenDimon: Wealth tax 'almost impossible to do' CNN's Don Lemon: 'Blow up the entire system' remark taken out of context Democrats shoot down talk of expanding Supreme Court MORE (D-Mass.) is tied with South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegThe Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice Hillicon Valley: FBI, DHS warn that foreign hackers will likely spread disinformation around election results | Social media platforms put muscle into National Voter Registration Day | Trump to meet with Republican state officials on tech liability shield MORE at 7 percent support.

Buttigieg has seen the biggest gain in the 2020 Democratic field, rising from 3 percent support in the same poll from late March.

There is a lot of room for Buttigieg to grow, as 44 percent of Democratic voters polled have never heard of him and 18 percent haven’t formed an opinion on him yet.

But Biden and Sanders are the clear front-runners, with two-thirds of Democratic voters viewing them favorably, according to the poll. No other candidates come close in terms of name recognition or net favorability rating.

Biden is expected to enter the presidential race sometime after Easter. Several women have come forward to say that he made them feel uncomfortable by touching them at public events, but those allegations do not appear to have tarnished his image among Democratic voters.

Biden is the top second choice among supporters of Sanders, Harris and O’Rourke. Sanders is the top second choice among Biden’s supporters.

The Morning Consult survey of 12,550 registered Democrats was conducted between April 8 and April 14 and has a 1 percentage point margin of error.