What we're hearing: Moderate and swing-district lawmakers and aides tell Axios' Margaret Talev and Alayna Treene that the party could suffer massive losses in next year's midterms if Democrats run like Sen. Elizabeth Warren is president.
One former Senate aide said it's "bye-bye majority" if Democrats run on "extreme wokeness."
Between the lines: The big question is how different the midterms will be from 2020. People voted for Democrats in November when the same talking points and ideas were being discussed. The presidency was at stake, but the other cultural or social issues were the same.
What to watch: This tension is a huge test for President Biden. He knows that the rising left in his party, while great for fundraising and media coverage, could be electorally disastrous.