Eugene Debs was the Socialist Party candidate for president four times, eventually ending up with about 4% of the vote in the 1920 election. Neat thing about that? He was in prison at the time and stripped of his citizenship.
Now look, Debs seems like a nice guy. His speeches, of which one is the point of this post, are really good. He wasn’t an abstract idea guy like so many socialists of his time and today (and other fringe political movements like libertarians). He saw problems, read some ideas, found them persuasive, and used his personal charm to grow his cause in very simple and direct ways.