Illustration: Rebecca Zisser/Axios

We knew it was important, of course, but a new CNN poll released Tuesday shows it's solidly in the top of Democratic primary voters' issues for 2020.

By the numbers: 96% of Democrats and Democratic-leaning independents say it's very or somewhat important for a presidential candidate to promise aggressive action on climate change.

  • That's the highest of any of the issues polled, beating other Democratic favorites like Medicare for All (91%), executive action to tighten gun laws (85%), and tuition-free public college (78%).
  • Most Democrats feel strongly about it. 82% said it was very important to address climate change, while 14% said it was somewhat important.

Yes, but: A big caveat is that the Democratic sample was small — just 411 voters (it was a subsample in a larger national poll). That means the margin of error was 5.9 percentage points.

  • That's large enough that we can't be sure climate is the number one issue for Democrats. It could just as easily be health care, which isn't far behind.
  • But we can safely say that it's one of the top issues — higher than most other priorities — and that Democrats are passionate about it.

The bottom line: With numbers like these, it's no surprise that O'Rourke and Jay Inslee have put climate policy at the top of their agendas. And it will likely be harder for other candidates to get through the primary without spelling out detailed policies of their own.

Go deeper:

Go deeper

Parties trade election influence accusations at Big Tech hearing

Photo: Michael Reynolds/Pool/AFP via Getty Images

A Senate hearing Wednesday with Big Tech CEOs became the backdrop for Democrats and Republicans to swap accusations of inappropriate electioneering.

Why it matters: Once staid tech policy debates are quickly becoming a major focal point of American culture and political wars, as both parties fret about the impact of massive social networks being the new public square.

1 hour ago - World

Germany goes back into lockdown

Photo: Fabrizio Bensch/Pool/AFP via Getty Images

German Chancellor Angela Merkel will enact one of Europe's strictest coronavirus lockdowns since spring, closing bars and restaurants nationwide for most of November, Reuters reports.

Why it matters: Germany is the latest European country to reimpose some form of lockdown measures amid a surge in cases across the continent.

How overhyping became an election meddling tool

Illustration: Annelise Capossela/Axios

As online platforms and intelligence officials get more sophisticated about detecting and stamping out election meddling campaigns, bad actors are increasingly seeing the appeal of instead exaggerating their own interference capabilities to shake Americans' confidence in democracy.

Why it matters: It doesn't take a sophisticated operation to sow seeds of doubt in an already fractious and factionalized U.S. Russia proved that in 2016, and fresh schemes aimed at the 2020 election may already be proving it anew.