Did Sanders & Warren competing against each other hurt progressives?

[brucejoel99]

Given the general composition of their respective bases, the most evident answer is that Bernie hurt Warren but Warren didn't really hurt Bernie. The clearest evidence of this lies in Warren's base practically splitting evenly between Biden & Bernie when she dropped out, & it's precisely that half-moderate/half-progressive base of hers which made clear that she was capable of building a coalition by constructively articulating her message & being nimble enough to pull in key support from other candidates/internal party constituencies, in contrast to Bernie's observed failure to build a coalition that could help him win against a unified moderate lane. Had Bernie not run or at least been out of the race by the time at which actual primaries began, there's nothing to indicate that she couldn't have ably held onto that & ran away with the primary on the back of her coalition of progressives (which would now include most Bernie supporters) & more liberal moderates.