The results point to a significant intensification of the race for democratic nomination.
The poll, conducted after the two-day debate, found that 22% of registered voters who are Democrats or Democrat-oriented independents support Biden for the party leader's nomination, 17% Harris, 15% Warren and 14% Senator Bernie Sanders. No other participant in the 23-person field reached 5%.
This represents a 10-point drop in support for Biden since the last CNN poll in May, while California's Harris rose 9 points and Massachusetts-based Warren increased its support by 8 points. No other candidates have seen significant movements since the last survey.
Harris & # 39; numbers follow a strong performance in the second night of the debates. Among those who saw or watched them, 41
And 30% of potential Democrat voters say Harris is the candidate they would like to learn more about, compared to 23% who said it in April. This number does not include those who say they are their first choice for the nomination.
Warren was the only survey heavyweight on stage on Wednesday night's Democratic debates. It provided a solid performance that served as an introduction to a national audience that may have been heard by many candidates for the first time.
On Thursday night, Harris and Biden shared the debate phase and faced each other in one of the most memorable moments of both nights. Harris questioned Biden directly about his rejection of federal buses as a way to integrate public schools in the 1970s and his comments on working with segregationist politicians during his time in the Senate. The move seems to have worked in their favor.
Harris and Biden now even support self-identified democrats, white voters, younger voters, non-white women and those who wanted to follow the debates. She clearly surpasses him among liberals and whites with college degrees. Warren challenges Biden and Sanders among the Independents, cites Biden, and even runs with Harris and Sanders among the Liberals, earning similar numbers to Harris among younger voters, whites and whites with university degrees.
Biden's strongest support continues to be black voters (36% behind Biden, 24% Harris, 12% Warren and 9% Sanders) and older voters (34% behind Biden versus 14% for Harris, 12% for Warren and only 7% for Sanders). He is also at the top of 30% among the more moderate and conservative Democratic voters (31% support him over 11% Harris, 10% Warren and 8% Sanders).
Biden is ahead of the rest of the field Democratic voters see the best shot to beat President Donald Trump.
In all, 43% of potential Democrat voters say Biden has the best chance of beating Trump in 2020, 30 points ahead of his closest rival, Bernie Sanders. In addition, 6 out of 10 potential Democrat voters say it is more important for them that the party nominate a candidate who has a great chance of beating Trump than nominate someone who shares their views on important issues.
But those voters who prefer a strong strike against Trump are not necessarily committed to Biden: 23% in this group say they've chosen a candidate, with Harris and Warren just behind, 18% each, and Sanders's only other candidate is in the double-digit range at 10%.