House Democrats are launching an official Medicare for All Caucus in an effort to promote a single-payer health-care bill.

The caucus, which will officially be announced Thursday, comes as an increasingly larger number of Democrats warm to the idea.

The idea, championed by Sen. Bernie Sanders Bernie SandersOutrage erupts over Breonna Taylor grand jury ruling Dimon: Wealth tax 'almost impossible to do' Grand jury charges no officers in Breonna Taylor death MORE (I-Vt.), is now favored by many potential 2020 Democratic presidential contenders.

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The caucus will launch with about 60 members and will be led by Democratic Reps. Pramila Jayapal Pramila JayapalDHS opens probe into allegations at Georgia ICE facility Progressive Caucus co-chair: Whistleblower complaint raises questions about 'entire detention system' Buttigieg, former officials added to Biden's transition team MORE (Wash.), Debbie Dingell Deborah (Debbie) Ann DingellRaces heat up for House leadership posts Michigan Rep. Debbie Dingell easily wins House primary Court orders release of Black Michigan teen who was jailed for missing schoolwork MORE (Mich.) and Keith Ellison Keith Maurice EllisonOfficers in George Floyd's death appear in court, motion for separate trials Ex-Minneapolis officer involved in Floyd death asks judge to dismiss murder charge Over 50 current, former law enforcement professionals sign letter urging Congress to decriminalize marijuana MORE (Minn.), with more expected to sign on in the coming weeks.

Ellison is the lead sponsor of H.R. 676, the Expanded and Improved Medicare for All Act, which has the support of a majority of the House Democratic Caucus.

The bill contains only an outline of how it would raise the trillions of dollars needed to establish universal health care, but it has become a focus of Democratic energy.

A recent poll from the Kaiser Family Foundation found a majority of Americans support the idea of single-payer health care.

“It’s the increasing view of everyone that single-payer is inevitable,” said Dan Riffle, spokesman for Ellison.

“It’s going to pass,” he said, and the caucus will attempt to hammer home that message.