What about the Populist movement and the nomination of William Jennings Bryan in 1896, 1900, and 1908?
I'm not very well educated about the Populist movement. I'll have to look into it.
I suppose my reference to Wilson, and the hard left, is because to me it was the first time that US political movements were mimicking (being directly influenced by) European Marxist.
I do love history and will do some research. Thanks for the tip.