Photo: Paul Zimmerman/WireImage/Getty Images

David Koch, a billionaire libertarian who supported conservative causes and campaigns, died at the age of 79, according to an announcement from his family on Friday.

Why it matters: Koch and his brother Charles built a massively influential network of donors that backed politicians who supported economically conservative policies, though he stepped away from his work last year due to his deteriorating health. The Koch network has faced criticism from President Trump throughout his tenure — notably due to breaks on immigration and trade — and said it would not support his re-election efforts earlier this year.

Go deeper: The Koch network is open to backing Democrats in 2020

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Mayors plan multifront attack on census shutdown

Illustration: Sarah Grillo/Axios

A growing number of mayors are banding together to fight what they consider to be an inaccurate and abruptly curtailed 2020 census, using an arsenal of legal, legislative and congressional efforts.

Why it matters: The outcome may determine whether President Trump or Joe Biden controls the redistricting process, which governs everything from congressional representation and redistricting to funding for schools and Head Start.

Moderator Kristen Welker will not control mics during final presidential debate

President Trump and Joe Biden at the first presidential debate in September. Photo: Scott Olson via Getty Images

A producer from the Commission on Presidential Debates will manage the operation of the candidates' microphones during Thursday's final presidential debate — not the event's moderator, NBC's Kristen Welker — a source with knowledge of the event told Axios.

Our thought bubble, via Axios' Alexi McCammond: Given President Trump's accusations of partisanship against the other debates' moderators, it makes sense that Welker would want to steer clear of any such optics during her stint in the chair.

Updated 2 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Aïda Amer/Axios

  1. Politics: Chris Christie: Wear a mask "or you may regret it — as I did" — Senate Democrats block vote on McConnell's targeted relief bill.
  2. Business: New state unemployment filings fall.
  3. Economy: Why the stimulus delay isn't a crisis (yet).
  4. Health: Many U.S. deaths were avoidable — The pandemic is getting worse again.
  5. Education: Boston and Chicago send students back home for online learning.
  6. World: Spain and France exceed 1 million cases.