There's an axis of populist economic policies in there, too; in the late 19th century this was strongly associated with Democrats, while Republicans pushed harder for "pure" laissez-faire capitalism.
That one is a bit more interesting, since in the modern day there are populist-economic wings of both major parties, though with very different approaches to implementing their ideas, surrounding a more laissez-faire "center".
That one is a bit more interesting, since in the modern day there are populist-economic wings of both major parties, though with very different approaches to implementing their ideas, surrounding a more laissez-faire "center".