A Change Research poll released Thursday shows Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.) has a small lead on Sen. Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.) amongst primary voters in California.

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The poll was taken after last week's Democratic primary debate in Ohio, KQED reports.

Warren leads the pack at 28 percent support, with Sanders coming in second at 24 percent. Former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE was in third with 19 percent, and South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBillionaire 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 Buttigieg stands in as Pence for Harris's debate practice MORE was fourth at 9 percent.

Sen. Kamala Harris Kamala HarrisTexas Democratic official urges Biden to visit state: 'I thought he had his own plane' The Hill's Campaign Report: Biden on Trump: 'He'll leave' l GOP laywers brush off Trump's election remarks l Obama's endorsements A game theorist's advice to President Trump on filling the Supreme Court seat MORE (D-Calif.) finds herself in fifth place in her home state with the support of 8 percent of respondents.

While Warren was the top choice among female Democratic voters, with 31 percent of those polled supporting her, she trailed Sanders by 6 points amongst Latino voters, and was behind Biden (30 percent), Sanders (20 percent) and Harris (16 percent) amongst black voters, polling at only 13 percent.

“We may be seeing the earliest signs of a stall in Warren’s rise and that rests squarely with her low numbers among nonwhite respondents," Change Research co-founder Pat Reilly told the radio station. "Her base is clearly white people in general and white women in particular.”

Garnering the support of minority voting blocs will be critical for Warren if she is to win the Democratic nomination.

The Change Research survey was conducted exclusively for KQED Oct. 15-18 using online surveys with 2,605 voters. The margin of error for Democratic voters in the poll was plus or minus 2.4 percentage points.