The Democratic Socialists of America circa 2016-2023 understood this and it was fundamental to their whole strategy: creating a bloc of left-leaning voters who could get American political parties (at least one of them anyway) to sit up and take notice.
Unfortunately DSA was mostly dismantled by entryists who don’t believe in electoralism. That’s another story.
https://www.thenation.com/article/activism/quit-dsa-gaza-israel/
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