I think about this chart by @robert_mariani pretty much every week. Not perfect but v. useful.
Left ⇔ Right
Restrained
⇕
Sensationalpic.twitter.com/fxSjHCGqCo
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Frankly, I didn't look too closely at the details of the chart. I just saw that it was in a horseshoe shape and thought I'd share. The one you posted might well be better.
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