Biden and Warren on the debate stage in 2019. Photo: Win McNamee/Getty Images

Sen. Elizabeth Warren endorsed Joe Biden on Wednesday, adding another high-profile endorsement after Sen. Bernie Sanders and former president Barack Obama did the same this week.

Why it matters: Warren's progressive vision for the future and detailed plans could help Biden build a bridge to the Sanders wing of the party he needs to turn out.

  • The former vice president told "Axios on HBO" in December that Warren would be on his own VP list — and she's high on the list of rumored possibilities as the two have discussed policy since she ended her own presidential campaign earlier this year.
  • Biden notably adopted Warren's bankruptcy plan into his platform last month.

What she's saying: "Among all the other candidates I competed with in the Democratic primary, there's no one I've agreed with 100% of the time over the years. But one thing I appreciate about Joe Biden is he will always tell you where he stands," Warren said in her endorsement video.

  • "When you disagree, he will listen — and not just listen, but really hear you, and treat you with respect no matter where you come from."

Don't forget: Biden has publicly committed to selecting a female candidate for his vice president, with people like Sens. Kamala Harris and Amy Klobuchar likely in consideration.

  • In 2016, Biden wanted Warren as his VP when he considered running for president during that cycle. 
  • Democrats close to Hillary Clinton considered Warren their second-most effective surrogate against Trump in 2016 — second only to Obama — because she'd lob attacks against him that a presidential candidate wouldn't. 

Throughout the 2020 primary, Warren's campaign inspired large crowds, long selfie lines, countless pinky promises with little girls and a sense of female empowerment in politics that helped her deliver some of her most stinging rebukes against male opponents — like Mike Bloomberg.

  • Women, more than any other demographic, have helped Democrats make political gains in the Trump era because of their turnout as candidates, voters and donors. 

Go deeper

California orders sweeping rollback of open businesses as virus cases surge

Photo: Agustin Paullier/AFP via Getty Images

California Gov. Gavin Newsom on Monday ordered indoor operations for restaurants, wineries, movie theaters and other family entertainment like zoos, museums and card rooms to cease immediately. Bars must also close entirely.

Why it matters: It's the largest statewide rollback of a reopening plan yet, underscoring the severity of the coronavirus outbreak in California.

1 hour ago - World

U.S. rejects China's claims to territory in South China Sea

Photo: Artyom Ivanov\TASS via Getty Images

The State Department announced Monday that it rejects most of China's territorial claims in the South China Sea, a first from the U.S. as the Trump administration toughens its approach toward Beijing.

Why it matters, via Axios' Bethany Allen-Ebrahimian: This is a significant, if symbolic, step toward a tougher U.S. approach to China's attempted annexation of the open seas.

Los Angeles and San Diego public schools will be online only this fall

Alhambra Unified School District. Photo: Frederic J. Brown/AFP via Getty Images

Public schools in Los Angeles and San Diego, the two largest public school districts in California, will not be sending children back to campuses next month and will instead administer online classes due to concerns over the ongoing threat of the coronavirus.

Why it matters: The two districts, which together enroll about 825,000 students, are the largest in the country thus far to announce that they will not return to in-person learning in the fall, even as the Trump administration aggressively pushes for schools to do so.