this framing is so weird to me. ok so the german communists didn't do enough to stop hitler. their protests were ultimately unable to stop the tide of fascism. wouldn't that be an argument AGAINST electoralism? "you weren't strong enough to beat this guy. you should have been even weaker"

Electoralism failed to stop Hitler but imagine if it did? Bet you feel pretty foolish now for not believing in electoraliam.

The history is somewhat different than "protests." The KDP and the NSDAP combined to destabilize Germany's (especially Berlin's streets). KPD failed to see who would most reap the benefits of such disintegration while undermining any more central-leaning potential allies/bulwarks against Hitler.