Once the clear favorite and leading contender for the Democratic Party presidential candidate nomination, former Vice President Joe Biden’s seemingly never-ending gaffes have led to him falling to third place in a national poll.

Biden is now polling at 19 percent behind Bernie Sanders and Elizabeth Warren, who are both at 20 percent, in the Monmouth University Poll.

“Biden has suffered an across the board decline in his support since June. He lost ground with white Democrats (from 32% to 18%) and voters of color (from 33% to 19%), among voters without a college degree (from 35% to 18%) and college graduates (from 28% to 20%), with both men (from 38% to 24%) and women (from 29% to 16%), and among voters under 50 years old (from 21% to 6%) as well as voters aged 50 and over (from 42% to 33%). Most of Biden’s lost support in these groups shifted almost equally toward Sanders and Warren,” Monomouth found.

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“The main takeaway from this poll is that the Democratic race has become volatile. 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 they are swinging more toward one of the left-leaning contenders with high name recognition rather than toward a lesser known candidate who might be more in line with them politically,” said Patrick Murray, director of the independent Monmouth University Polling Institute. He added, “It’s important to keep in mind this is just one snapshot from one poll. But it does raise warning signs of increased churning in the Democratic nomination contest now that voters are starting to pay closer attention.”

Biden has lost support from Democrats who call themselves moderate or conservative (from 40 percent to 22 percent) as well as those who consider themselves liberal, dropping from 24 percent to 15 percent.

Fortunately for Biden, most of the lost support appears to be coming from states that vote later in the primary process — giving him a chance to regain momentum.

“Biden’s drop in support is coming disproportionately from later states that have less impact on the process. But if this trend continues it could spell trouble for him in the early states if it undermines his claim to being the most electable candidate. This could benefit someone like Harris, who remains competitive in the early states and could use a strong showing there to propel her into the top tier. Based on the current data, though, Warren looks like the candidate with the greatest momentum right now,” said Murray.