At the moment, no, because Bernie or another progressive Democrat isn’t in the spotlight.
If Bernie or another progressive took Biden’s place?
I’m not entirely discounting the idea that the American people could surprise me. But talking to ordinary voters, I’m not exactly filled with hope that there’s a secret cabal of super-compassionate left wing votes waiting to be activated by the right candidate. In fact, I’m filled with the suspicion that Bernie or another progressive Dem would be in the same spot, or worse, as Biden is currently.
And regardless of whether a progressive would perform better electorally, the fact remains that Trump is not a valid alternative to anyone with any hint of foresight.