2020 Democratic candidate Sen. Kamala Harris received a significant bump in favorability following her debut on the debate stage last week, according to two polls conducted by Morning Consult and CNN.

Why it matters: Polls determine candidates' eligibility for the debate stage. For the second debates, candidates must have reached 1% in three DNC-approved polls to get a slot on either July 30 or 31.

The big picture: Most political commentators believe Harris had an all-around strong debate showing, but it was her now-viral challenge of former Vice President Joe Biden's opposition to federally mandated busing in the 1970s that really set her apart. Harris raised more than $2 million from 63,000 donors in the 24 hours after the debate, with tweets mentioning her handle generating 23% more interactions on Twitter than Mayor Pete Buttigieg, the next highest candidate.

By the numbers, according to Morning Consult:

Joe Biden: 33% (-5)

Bernie Sanders: 19% (0)

Kamala Harris: 12% (+6)

Elizabeth Warren: 12% (-1)

Pete Buttigieg: 6% (-1)

Cory Booker: 3%

Beto O’Rourke: 2% (-2)

Andrew Yang: 2%

By the numbers, according to CNN:

Joe Biden: 22% (-10)

Kamala Harris: 17% (+9)

Elizabeth Warren: 15% (+8)

Bernie Sanders: 14% (-4)

Pete Buttigieg: 4% (-1)

Cory Booker: 3%

Beto O'Rourke: 3% (-2)

Amy Klobuchar: 2%

Methodology: Morning Consult surveyed 2,407 Democratic primary voters immediately following the first Democratic primary debate. The interviews were collected June 27–28 and have a margin of error of +/- 2%.

CNN conducted their poll through SSRS from June 28-30, surveying 1,613 adults with a margin of error of +/- 3%. For the subsample of 656 Democrats and Democratic-leaning independents who are registered voters, the margin of error was +/- 4.7%.

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