New poll shows Biden falling badly, three-way tie for Democratic lead

Joe BidenJoe BidenFive takeaways from Trump-Biden debate clash The Memo: Debate or debacle? Democrats rip Trump for not condemning white supremacists, Proud Boys at debate MORE’s support in the race for the Democratic presidential nomination is slipping, according to a new survey from Monmouth University Poll that shows the former vice president dropping below 20 percent.

The survey showed Biden with support from 19 percent of Democratic and Democratic-leaning voters nationally, a double-digit decline from Monmouth's most recent poll in June when he led the pack with 32 percent.

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Now, the dynamics have changed, according to the Monmouth survey. Sens. Bernie SandersBernie SandersTrump, Biden clash over health care as debate begins Biden calls Trump a 'liar' and a 'clown' at first debate Biden mocks Trump campaign debate claims: 'I've got my earpiece and performance enhancers ready' MORE (I-Vt.) and Elizabeth WarrenElizabeth WarrenWarren won't meet with Barrett, calling Trump's nomination an 'illegitimate power grab' The Hill's Campaign Report: Trump's tax bombshell | More election drama in Pennsylvania | Trump makes up ground in new polls New Biden campaign ad jabs at Trump's reported 0 income tax payments MORE (D-Mass.), the primary field’s top progressive candidates, are each at 20 percent, putting them in a statistical tie with Biden and indicating a tightening three-way race.

Sen. Kamala HarrisKamala HarrisThe Memo: Debate or debacle? Biden will keep debating Trump, campaign says Joe Scarborough urges Biden: 'Do not do anymore debates' MORE (D-Calif.) was a distant fourth in Monday's poll, with 8 percent. Her level of support was unchanged from Monmouth's June survey.

South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegCindy McCain joins board of Biden's presidential transition team Billionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November MORE, who has registered among the top contenders in polls for months, is now tied for fifth place with Sen. Cory BookerCory Anthony BookerWarren won't meet with Barrett, calling Trump's nomination an 'illegitimate power grab' Schumer won't meet with Trump's Supreme Court pick This week: Senate kicks off Supreme Court fight MORE (D-N.J.) at 4 percent.

Only four other candidates — former tech executive Andrew YangAndrew YangThe shape of guaranteed income Biden's latest small business outreach is just ... awful Doctor who allegedly assaulted Evelyn Yang arrested on federal charges MORE, former Housing and Urban Development Secretary Julián Castro, former Rep. Beto O’Rourke (D-Texas) and bestselling author Marianne WilliamsonMarianne WilliamsonMarianne Williamson discusses speaking at People's Party Convention Fewer people watched opening night of Democratic convention compared to 2016 Marianne Williamson: Democratic convention 'like binge watching a Marriott commercial' MORE — garnered support form more than 1 percent of respondents in the poll.

Patrick Murray, director of the Monmouth University Polling Institute, said the latest survey results suggest the race for the Democratic nomination is entering a new phase.

“The main takeaway from this poll is that the Democratic race has become volatile,” Murray said. “Liberal voters are starting to cast about for a candidate they can identify with. Moderate voters, who have been paying less attention, seem to be expressing doubts about Biden.”

But instead of gravitating toward a lesser-known but more centrist-minded alternative, moderate voters “are swinging more toward one of the left-leaning contenders with high name recognition.”

Indeed, Biden has lost support among Democrats who identify as either moderate or conservative. In June, roughly 40 percent of those voters said they backed Biden’s bid for the nomination. Since then, that number has dropped to 22 percent.

There are signs that moderate and conservative Democrats are beginning to gravitate toward Sanders and Warren. Sanders saw his support among those voters jump from 10 percent to 20 percent over the past two months, while backing for Warren rose from 6 percent to 16 percent.

Since June, both Sanders and Warren have gained support overall, according to the Monmouth poll. Sanders gained 6 points in the latest survey, while Warren picked up 5 points.

At the same time, Warren has seen a noticeable uptick in favorability, climbing from 60 percent in May to 65 percent in August. Biden, on the other hand, saw his favorability drop from 74 percent to 66 percent during the same time period.

The Monmouth University Poll surveyed 298 registered voters who identify as Democrats or Democratic-leaning from Aug. 16-20. It has a margin of error of plus or minus 5.7 percentage points.