Joe Biden at a rally in Pittsburgh. Photo: Jeff Swensen/Getty Images

Polls released Tuesday from CNN, Morning Consult and Quinnipiac suggest former Vice President Joe Biden received a significant bump among Democratic and Democratic-leaning voters after he officially jumped into the 2020 race last week.

Why it matters: Biden leads the crowded Democratic field with an average of 37.6%, solidifying his status as the race's current frontrunner.

By the numbers

CNN

  • Biden: 39%
  • Sen. Bernie Sanders: 15%
  • Sen. Elizabeth Warren: 8%
  • South Bend Mayor Pete Buttigieg: 7%
  • Beto O'Rourke: 6%
  • Sen. Kamala Harris: 5%
  • The remaining candidates all fell below 2%.

Morning Consult

  • Biden: 36%
  • Sen. Bernie Sanders: 22%
  • Sen. Elizabeth Warren: 9%
  • South Bend Mayor Pete Buttigieg: 8%
  • Sen. Kamala Harris: 7%
  • Beto O'Rourke: 5%
  • Cory Booker: 3%
  • The remaining candidates all fell below 2%.

Quinnipiac

  • Biden: 38%
  • Sen. Elizabeth Warren: 12%
  • Sen. Bernie Sanders: 11%
  • South Bend Mayor Pete Buttigieg: 10%
  • Sen. Kamala Harris: 8%
  • Beto O'Rourke: 5%
  • The remaining candidates all fell below 2%.

Go deeper: Everything you need to know about the 2020 candidates

Go deeper

Bryan Walsh, author of Future
16 mins ago - Science

The murder hornets are here

A braver man than me holds a speciment of the Asian giant hornet. Photo: Karen Ducey/Getty Images

Entomologists in Washington state on Thursday discovered the first Asian giant hornet nest in the U.S.

Why it matters: You may know this insect species by its nom de guerre: "the murder hornet." While the threat they pose to humans has been overstated, the invading hornets could decimate local honeybee populations if they establish themselves.

Biden is highest-spending political candidate on TV ads

Joe Biden. Photo: Sean Rayford/Getty Images

After spending an additional $45.2 million on political ads this week, former Vice President Joe Biden has become the highest-spending political candidate on TV ads ever, according to data from Advertising Analytics.

By the numbers: In total, the Biden campaign has spent $582.7 million on TV ads between 2019 and 2020, officially surpassing Michael Bloomberg's record spend of roughly $582 million. Biden's spend includes his primary and general election advertising.