[meeuwer]

Leaving aside your focus on political views (even though the test I proposed is more about getting better informed than diversifying one’s beliefs and prejudices), what’s the typical case you’re getting at: do people have unique sets of political views or are those views more clustered “than people assume”? You sort of started arguing for the former and then pivoted.

[Spivak]

There are two groups of issues, ones that stem from the core defining beliefs of the groups that cause individuals to self-label as members in the first place and everything else. You'll see a lot of unity on the former and surprisingly little unity on the latter outside of transient political coalitions of convenience. Once you stray from things that are rooted in the core values of a group you'll find huge amounts of disagreement and that individuals have extremely varied views taken holistically.