The "Bernie Bros" Boogeyman Rahm Emanuel, former White House Chief of Staff under Barack Obama, has sounded a familiar warning in an op ed piece published in the Wall Street Journal: that Sanders' supporters could "spoil" the Democratic Party's chances in the midterm elections.
This concern is rooted in a long standing narrative that the progressive wing of the party is too extreme and divisive for mainstream American voters.
The trope has been trotted out to justify watering down or abandoning key planks in the party's platform, such as Medicare for All, free college tuition, and a Green New Deal.