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Biden expands lead over 2020 Democrats: poll

Former Vice President Joe BidenJoe BidenMilitary must better understand sexual assaults to combat them The Hill's Equilibrium — Presented by NextEra Energy — Tasmanian devil wipes out penguin population On The Money: Democrats make full-court press on expanded child tax credit | White House confident Congress will raise debt ceiling MORE has widened his lead among fellow 2020 Democrats, with a new poll showing him atop the crowded field by double digits.

Twenty-nine percent of Democratic and Democratic-leaning registered voters said they supported Biden in the CNN poll released early Tuesday. Sen. Bernie SandersBernie SandersThe Hill's Equilibrium — Presented by NextEra Energy — Tasmanian devil wipes out penguin population Overnight Health Care: Medicaid enrollment reaches new high | White House gives allocation plan for 55M doses | Schumer backs dental, vision, hearing in Medicare Schumer backing plan to add dental, vision and hearing coverage to Medicare MORE (I-Vt.) has 15 percent and Sen. Elizabeth WarrenElizabeth WarrenBiden risks break with progressives on infrastructure The Memo: The center strikes back Centrists gain foothold in infrastructure talks; cyber attacks at center of Biden-Putin meeting MORE (D-Mass.) is at 14 percent, according to CNN.

Biden’s support has risen 7 points since a survey conducted in late June, with no other candidate making significant improvements in polling numbers, CNN noted.

Biden’s supporters are more often self-identified Democrats than independents, older rather than younger, and are moderate and conservative voters instead of liberals, pollsters found.

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Thirty-one percent of self-identified Democrats, 34 percent of voters ages 45 and older, and 34 percent of moderate and conservative voters back Biden, according to the poll.

Biden’s support also comes from the 54 percent of Democratic and Democratic-leaning registered voters whose main goal is to boot President TrumpDonald TrumpWhat blue wave? A close look at Texas today tells of a different story Democrats go down to the wire with Manchin Trump's former bodyguard investigated in NY prosectors' probe: report MORE from office in 2020, with 35 percent of individuals in that group supporting the former vice president.

While Biden’s support has increased, Sen. Kamala HarrisKamala HarrisWhat blue wave? A close look at Texas today tells of a different story A healthier planet and economy is worth fighting for Watch live: Harris gives remarks on the child tax credit MORE (D-Calif.) has seen a notable decline in support, with 5 percent of potential Democratic voters backing the senator, compared to 17 percent in the June poll, which was conducted soon after the first round of Democratic presidential primary debates. Harris and Biden clashed during the first round of debates, with the California senator challenging Biden on his views on busing.

The new poll was conducted from Aug. 15 to Aug. 18 and surveyed 1,001 adult registered voters. It has a margin of error of 3.7 percentage points.