Communitarianism v Libertarianism.

[Okay, maybe Mike Johnson is a competent parliamentarian.]

There's plenty to hate about the "pure" forms of both quadrants (i.e. Stalin vs. Murray Rothbard, basically), but Casey is a pretty good representative of the top left quadrant whereas Paul is a literally meme-tier representative of the bottom right. That plus the fact that I'm two PM points away from being authleft but seven or eight away from being libright makes this an easy Casey vote.

[Okay, maybe Mike Johnson is a competent parliamentarian.]

There's plenty to hate about the "pure" forms of both quadrants (i.e. Stalin vs. Murray Rothbard, basically)

I think one of those people clearly caused more real world harm than the other.

Well, yes; he was given a lot more opportunity to. What tankies say of "true" communism actually is true of "true" libertarianism* in that it's a largely untested ideology.

*not that Murray "police brutality is Good, Actually" Rothbard was really all that libertarian, but he certainly was in the bottom right quadrant!