Poll: Biden support sinks, Harris moves up to third place after Democratic debate

Sen. Kamala HarrisKamala Devi HarrisAre Democrats turning Trump-like? Volatile presidential polls spark new round of anxieties Conservative commentator rips Shapiro over criticism of people with multiple jobs MORE (D-Calif.) surged into third place among 2020 Democratic presidential candidates following what many considered a standout debate performance on Thursday, according to a new Morning Consult poll

The survey, which was released Saturday, found that 12 percent of potential Democratic primary voters chose Harris, who made headlines for confronting former Vice President Joe BidenJoe BidenAre Democrats turning Trump-like? Volatile presidential polls spark new round of anxieties British Bookmaker: Warren has replaced Biden as Democratic primary favorite MORE (D) about his past views on busing, as their first choice for president. The figure represents a 6 percentage point surge from an identical poll released last week. 

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Harris still trails Sen. Bernie SandersBernie SandersVolatile presidential polls spark new round of anxieties GOP memo deflects some gun questions to 'violence from the left' British Bookmaker: Warren has replaced Biden as Democratic primary favorite MORE (I-Vt.) and Biden by solid margins. But Morning Consult noted that Harris's surge came at the expense of Biden, who saw his support drop by 5 percentage points from last week. 

Thirty-three percent of respondents picked Biden as their top choice. Meanwhile, 19 percent of respondents said Sanders was their preferred candidate. 

Twelve percent of possible Democratic primary voters said they'd choose Sen. Elizabeth WarrenElizabeth Ann WarrenAre Democrats turning Trump-like? Manufacturing shrinks, raising questions for Trump Volatile presidential polls spark new round of anxieties MORE (D-Mass.) as the party's presidential nominee. It was a decrease of 1 percentage point and good enough to place her in a tie for third with Harris. 

South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegVolatile presidential polls spark new round of anxieties British Bookmaker: Warren has replaced Biden as Democratic primary favorite The Hill's Campaign Report: Battle for Senate begins to take shape MORE (D) appeared ahead of Harris in the previous Morning Consult poll, with 7 percent of respondents saying they'd vote for him. He received 6 percent of the support to sit in fourth place in the most recent survey. 

Harris's rise comes on the heels of a commanding performance on the second night of the first 2020 presidential debates. At one point, the California senator engaged in a contentious back-and-forth with Biden after she criticized his opposition to busing to desegregate schools. 

"There was a little girl in California who was part of the second class to integrate her public schools, and she was bused to school every day," Harris said to Biden. "That little girl was me."
 
Biden called Harris's criticism a "mischaracterization" of his views and said his issue was with the Department of Education administering busing policies. 
 
The Morning Consult post-debate poll was conducted between June 27 and June 28 among 2,407 registered voters who said they were considering voting in a Democratic primary or caucus in their state. It has a margin of error of 2 percentage points.