kosmund's original graph has some problems. There are plenty of parties to the right of the Republican Party, and of course using just one axis simplifies things overmuch.

But the interesting part, and a meritorious idea in my judgement, is kozmund's chromopolitical spectrum.

To truly address the (ahem) colorful state of US politics(1), we should amend the spectrum to include, from left to right:

No, it's not optically correct, but then things seldom are as they appear in politricks.

(1) I address US politics here because that's what I know. Discussions of, say, the Orangemen could be addressed in a separate writeup in this node.