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Elizabeth Warren and Ro Khanna. Photos: Scott Olson; Michael Brochstein/Echoes Wire/Barcroft Media via Getty Images

Rep. Ro Khanna (D-Calif.), co-chair of Sen. Bernie Sanders' presidential campaign and of the Congressional Progressive Caucus, called on Tuesday for Sen. Elizabeth Warren (D-Mass.) to be tapped as Joe Biden's running mate.

Why it matters: Since Sanders suspended his campaign last month, he and Biden have been working to unite the progressive and moderate wings of the Democratic Party — an effort that would likely benefit from the selection of Warren as VP. Khanna told the Daily Beast that he has made the case for Warren in conversations with the Biden team.

What they're saying: Khanna wrote in a tweet thread that Warren has been influential in crafting the HEROES Act, House Democrats' $3 trillion coronavirus relief proposal.

  • "In an age of sound bites, effectiveness and leadership still matter most. It simply cannot be overstated how influential @ewarren has been during this crisis and on the best parts of the House HEROES Act," Khanna tweeted.
  • Khanna said Warren's input helped get funding for states to implement vote-by-mail elections and an Essential Workers Bill of Rights, among other provisions, into the legislation.
  • "She needs to be on the ticket," Khanna wrote.

Worth noting: Some Democrats worry that if Warren is selected as Biden's running mate, it would leave open a Senate seat that would be filled by Massachusetts Gov. Charlie Baker, a Republican.

The big picture: On Wednesday, Biden and Sanders released the names of people they've appointed to joint task forces focused on health care, education, the economy, climate change, criminal justice and immigration.

  • Rep. Alexandria Ocasio-Cortez (D-N.Y.) and former Secretary of State John Kerry are among the prominent names.

Go deeper

Ben Geman, author of Generate
Aug 21, 2020 - Energy & Environment

Biden emphasizes climate change during his biggest moment

Illustration: Sarah Grillo/Axios

Joe Biden emphasized climate change in his speech accepting the Democratic nomination Thursday night, as the days leading up to it offered fresh evidence of the problem's scale and tensions within his coalition.

Why it matters: It was a statement of priority in the most important speech of Biden's campaign to unseat President Trump, and the address mentioned the topic repeatedly.

Caitlin Owens, author of Vitals
16 mins ago - Health

New data reignites the debate over coronavirus vaccine strategy

Illustration: Eniola Odetunde/Axios

New research is bolstering the case for delaying second doses of coronavirus vaccines.

Why it matters: Most vulnerable Americans remain unvaccinated heading into March, when experts predict the more infectious virus variant first found in the U.K. could become dominant in the U.S.

17 mins ago - Politics & Policy

Rail's big moment is arriving

Illustration: Sarah Grillo/Axios

Passenger rail could be the big winner if Congress moves ahead with President Biden's ambitious infrastructure plan.

Why it matters: There's long been bipartisan support for rebuilding America's crumbling infrastructure, but under Biden, the focus has shifted to sustainable projects that fulfill both his climate and equity goals, such as rail transit.