Sanders speaks during a health care rally at the 2017 Convention of the California Nurses Association/National Nurses Organizing Committee. Nurses wore red shirts in solidarity for the bill. Photo: Justin Sullivan/Getty Images

National Nurses United, the country's biggest nurses' union, will endorse Bernie Sanders in the 2020 presidential race this week, the New York Times reports.

Why it matters: It's significant that the group chose to back Sanders and his "Medicare for All" plan despite the fact that he's facing a progressive challenger in Elizabeth Warren on the issue.

  • The union also endorsed Sanders during the 2016 presidential election.
  • The decision will give Sanders millions in financial backing from the union's super PAC — despite the fact that the candidate, along with the Democratic field's more progressive members, have largely disavowed such support.

The big picture: Sanders has accumulated other endorsements from labor unions, including the United Electrical, Radio and Machine Workers of America and the National Union of Healthcare Workers (which backed both him and Warren).

Go deeper: The quiet race to win Hillary Clinton's endorsement

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Biden confidants see VP choices narrowing to Harris and Rice

Photos: Tom Williams/CQ-Roll Call, Inc via Getty Images; Win McNamee/Getty Images

Confidants of Joe Biden believe his choices for vice president have narrowed to Sen. Kamala Harris and Susan Rice — and would be surprised if he picks anyone else.

The state of play: This is a snapshot of the nearly unanimous read that we get from more than a dozen people close to him.

An election like no other

Illustration: Eniola Odetunde/Axios

The coronavirus will make the 2020 presidential election different from any in modern history: Voting that begins earlier, results that take longer, mail carriers as virtual poll workers and October Surprises that pop in September.

The big picture: Perhaps 80 million Americans will vote early, by mail or in person, Tom Bonier, CEO of TargetSmart, a Democratic political data firm, tells Axios. That's going to set up more of an Election Season than an Election Day — and increase the odds of national turmoil over the vote count.

Exclusive: Inside McCarthy's new GOP messaging platform

House GOP Leader Kevin McCarthy (R-Calif.). Photo: Tasos Katopodis/Getty Images

House Republican Leader Kevin McCarthy (R-Calif.) has given his GOP colleagues new marching orders for stump speeches between now and November, as incumbents worry about how President Trump's own challenges may strain their re-election bids.

Driving the news: McCarthy delivered a PowerPoint presentation to the GOP conference in person last Thursday at the Capitol Visitor Center, with several members joining via Zoom, lawmakers and aides familiar with the gathering tell Axios.