One thing to consider is that Republican affiliation is a minority opinion, so it makes sense that they would be outnumbered in a random sampling, though I would expect 2:1 rather than 3:1.
According to Pew’s most recent National Public Opinion Reference Survey (Feb–Jun 2025), 46% of Americans identify with or lean toward the Republican Party, and 45% identify with or lean toward the Democratic Party. https://www.pewresearch.org/politics/fact-sheet/party-affili...
In a truly random U.S. sample you would expect Republican identifiers to be nearly as numerous as Democratic identifiers.
Those in the United States who choose to contribute to a collaborative encyclopedia likely don't mirror the population as a whole; it's reasonable to assume they're more formally educated and more technically oriented, traits that tend, on average, to correlate with liberal or left-leaning political views.
