Sanders leads potential 2020 Dem candidates in NH poll
© Greg Nash

Vermont Sen. Bernie SandersBernie SandersOvernight Health Care: CDC approves Pfizer vaccine for adolescents aged 12-15 | House moderates signal concerns with Pelosi drug pricing bill | Panel blasts COVID-19 response Briahna Joy Gray: Warren not endorsing Sanders in 2020 was 'really frustrating' House moderates signal concerns with Pelosi drug pricing bill MORE (I) leads a field of potential Democratic presidential contenders for the 2020 New Hampshire primary, according to a new poll of likely Democratic voters.

A University of New Hampshire poll released Wednesday shows Sanders with 31 percent support in a hypothetical matchup against other potential 2020 challengers, including Sen. Elizabeth WarrenElizabeth WarrenWarren says Republican party 'eating itself and it is discovering that the meal is poisonous' Briahna Joy Gray: Warren not endorsing Sanders in 2020 was 'really frustrating' McConnell hits Democratic critics of Israel MORE (D-Mass.) and former Vice President Joe BidenJoe BidenBiden says Beau's assessment of first 100 days would be 'Be who you are' Biden: McCarthy's support of Cheney ouster is 'above my pay grade' Conservative group sues over prioritization of women, minorities for restaurant aid MORE.

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Sanders won the 2016 New Hampshire Democratic primary with 60 percent of the vote, defeating former Secretary of State Hillary ClintonHillary Diane Rodham ClintonMore than half of eligible Latinos voted in 2020, setting record Fox News signs Trey Gowdy, Dan Bongino for new shows The Memo: GOP attacks bounce off Biden MORE, who eventually won the Democratic nomination for president.

In the poll, Biden came in second place with 24 percent support, while Warren took third place with 13 percent. Other potential challengers, including Sen. Cory BookerCory BookerPolice reform talks hit familiar stumbling block Almost 20 advocacy groups team up to pressure Congress to pass health care bill for immigrants Biden adds pressure to congressional talks with self-imposed deadlines MORE (D-N.J.), former Maryland Gov. Martin O'Malley and Facebook CEO Mark Zuckerberg, all failed to break 10 percent.

When voters were not given a list of potential options, the differences were more stark. About 15 percent of likely primary voters mentioned Sanders as a candidate they could support, compared to just 5 percent for Biden and Clinton. Four percent mentioned Warren.

President Trump's support is also historically weak in the poll. Just under half of likely Republican primary voters said they planned to vote for Trump in the 2020 GOP primary, compared to 64 percent of Democrats who said the same about former President Obama in the same poll taken in October 2009.

The New Hampshire University poll surveyed 573 adults in the state between Oct. 3-15. It carries a margin of error of 4.1 percentage points.