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 holds a commanding lead over the Democratic primary field in part due to nonwhite voters who support his candidacy, a new poll released Tuesday found.

Biden had the support of 50 percent of nonwhite Democratic primary voters in the CNN–SRSS survey, by far the lion's share of the demographic. 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-Vt.) trailed in second place with the support of 14 percent of nonwhite voters, while 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.) earned 7 percent.

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Among white Democrats, the race is closer. Biden holds the support of 29 percent of white Democrats, according to the poll, while Sanders had 15 percent.

Warren, in third place overall in the poll, enjoys also about the same amount of support among white voters (8 percent) as she does among voters of color (7 percent).

And 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 (D), in fourth place, enjoys the support of 10 percent of white Democrats for the primary, but registers just 3 percent support among voters of color.

Overall, the vice president enjoys a comfortable lead over the Democratic field following the launch of his presidential campaign last week, according to the CNN–SRSS survey, which shows him with the support of 39 percent of all likely Democratic primary voters compared to Sanders, his closest competitor, who sits at 15 percent.

The CNN–SRSS poll was conducted from April 25 to 28 and contacted 411 Democrats and Democratic-leaning voters. The margin of error is 5.9 percentage points.