Tom Steyer and Michael Bloomberg. Photos: Mark Makela/Getty Images and Ron Adar/SOPA Images/LightRocket via Getty Images

2020 Democratic candidate and billionaire Tom Steyer challenged incoming contender Michael Bloomberg on Friday to support a wealth tax or leave the 2020 race.

The big picture: Bloomberg told Axios he will "spend whatever it takes to defeat Donald Trump." Steyer, also a billionaire, has spent more than any other Democratic candidate to self-fund his campaign — allowing him to meet the increasingly strict qualifications for presidential debates.

What he's saying: “People like Michael Bloomberg and I, who have done well under the current economic system, have a direct responsibility to address wealth inequality and bring forth progressive plans to support working families."

  • Steyer said the Democratic nominee must support a wealth tax if they also support progressive policies like the Green New Deal and universal health care.

Between the lines: A Steyer campaign aide would not explicitly say if Steyer and Bloomberg have a responsibility to increase taxes on the wealthy because they are billionaires.

  • "I think what Tom is talking about specifically is a wealth tax, and obviously that does impact those people at the very top. And when you think about who those people at the very top are in this race, there are only two of them," the aide told Axios.

Go deeper: 2020 candidates' Q3 fundraising hauls

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Data: Compiled from state health departments by Axios; Map: Danielle Alberti/Axios

At least 15 states broke their single-day novel coronavirus infection records this week, according to state health department data reviewed by Axios.

The big picture: The number of coronavirus cases increased in the vast majority of states over the last week, and decreased in only two states plus the District of Columbia, Axios' Andrew Withershoop and Caitlin Owens report.

Updated 13 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Aïda Amer/Axios

  1. Global: Total confirmed cases as of 3 p.m. ET: 11,143,945 — Total deaths: 527,681 — Total recoveries — 6,004,593Map.
  2. U.S.: Total confirmed cases as of 3 p.m. ET: 2,818,588 — Total deaths: 129,584 — Total recoveries: 883,561 — Total tested: 34,213,497Map.
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  4. Public health: U.S. coronavirus infections hit record highs for 3 straight days.
  5. Politics: Trump extends PPP application deadlineKimberly Guilfoyle tests positive.
  6. World: Mexican leaders call for tighter border control as infections rise in U.S.
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  8. 1 📽 thing: Drive-in movie theaters are making a comeback.
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In photos: America celebrates July 4 during global pandemic

Photo: Francine Orr/Los Angeles Times/Getty Images

The U.S. has already celebrated Easter, graduations and so much more during the coronavirus pandemic, and now it can add July 4 to the list.

The state of play: Axios' Stef Kight writes public parades and fireworks displays around much of the country are being canceled to prevent mass gatherings where the virus could spread. Hot-dog contests and concerts will play to empty stands and virtual audiences — all while American pride treads an all-time low.